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Electrohydraulic ValvesTechnical Information

ZMC and ZMV

2

ZMC and ZMV Electrohydraulic ValvesTechnical InformationIntroduction

Electrohydraulic Control Valves Introduction

2

Introduction

General Description

ZMC stack valves and ZMV proportional valves canbe applied with pumps and various actuators totransfer and control hydraulic power.

ZMC valves are solenoid-operated stack valves usedto control the direction of hydraulic fluid flow tomotors, cylinders, and other remote actuators.

ZMC valves use a unique through-tube design totransfer fluid from module to module in the stack. Thesolenoid pilot valves are a reliable three piece design.Solenoids are water resistant with several termina-tions and voltages available.

The solenoid-operated pilot valves supply pilot flowto the larger directional control spools and poppets.This allows for full pressure to shift these spools whenthe pilot valve is energized.

ZMV valves are solenoid-operated proportional flowcontrols used to control the amount of flow to ahydraulic actuator.

The ZMV proportional valves are stand-alone designsthat are controlled by a pulse width modulated (PWM)signal. Electronic controllers are also available tosatisfy system requirements.

� ZMV and ZMC valves - Solutions for Low Flow Applications

� Complete Line of Directional Control Valves

� Optional Spools to Satisfy Diverse Applications

� Proven Reliability & Performance

� Modular Product Design

3

ZMC and ZMV Electrohydraulic ValvesTechnical InformationContents


3

Contents

Introduction ..................................................................................................................................... 2

General Description..................................................................................................................................... 2Product Features .........................................................................................................................................4Technical Specifications ..............................................................................................................................5

ZMC Module Specifications ...........................................................................................................6

ZMC - UVO Module: 2-Position/2-Way Normally Open Unload Valve ........................................................7ZMC - UVC Module: 2-Position/2-Way Normally Closed Unload Valve .................................................... 8ZMC - UVF Module: 2-Position/2-Way Field Convertible Unload Valve .................................................... 9ZMC - URO Module: 2-Position/2-Way Normally Open Unload Valve with Integral Relief ........................ 10ZMC - URF Module: 2-Position/2-Way Field Convertible Unload Valve with Integral Relief ..................... 11ZMC - PRV Module: Pressure Reducing Valve .........................................................................................12ZMC - PFD Module: Priority Flow Dividing Valve ...................................................................................... 13ZMC - DPV Module: 3-Position/3-Way Demand Priority Valve ................................................................. 14ZMC - SOV Module: 2-Position/2-Way Pilot-Operated Poppet Valve .......................................................15ZMC - 240 Module: 2-Position/4-Way Criss-Cross Pilot-Operated Spool Valve ....................................... 16ZMC - 24C Module: 2-Position/4-Way Closed Center Pilot-Operated Spool Valve ...................................17ZMC - 340 Module: 3-Position/4-Way Figure Four Pilot-Operated Spool Valve........................................18ZMC - 34C Module: 3-Position/4-Way Closed Center Pilot-Operated Spool Valve ...................................19ZMC - 34X Module: 3-Position/4-Way Figure Four Pilot-Operated Spool Valve with P-O Checks ........... 20ZMC - 34Y Module: 3-Position/4-Way Closed Center Pilot-Operated Spool Valve with P-O Checks ....... 21ZMC - PPV Module: 3-Position/3-Way Normally Closed Pilot-Operated Poppet Valve ............................22ZMC - LFS Module: Standard Low Flow Valve .........................................................................................23ZMC - LFH Module: High Pressure Low Flow Valve ................................................................................. 24

ZMV Module Specifications.......................................................................................................... 25ZMV-21O: Open Center Proportional Flow Control Valve ......................................................................... 26ZMV-21P: Open Center Proportional Flow Control Valve with Power Beyond ..........................................27ZMV-21C: Closed Center Proportional Flow Control Valve .......................................................................28ZMV-21L: Closed Center Load-Sensing Proportional Flow Control Valve ................................................29

Configuration Options .................................................................................................................. 30Solenoids................................................................................................................................................... 30Control Device Options .............................................................................................................................33

SCA-35: Single Channel Amplifier ................................................................................................33Electronic Control Handle: MCH41CL2287.................................................................................. 34

Orifice Plugs / Plates ................................................................................................................................. 35Required Assembly Hardware ................................................................................................................... 36

Through Tubes / Plug Tubes .........................................................................................................36Stacking Configurations ................................................................................................................37Stacking Kits .................................................................................................................................38Module Identification .....................................................................................................................41

Outline Drawings........................................................................................................................... 42

4



4

Product Features

A Complete Family

� Wide Range of Options

� System Flexibility -Normally Open, Normally Closed, and FieldConvertible Valve Assemblies

� Standard Housing and Mounting Patterns forStacking Any Module

� Pressure Controls for System Protection

� Pilot-Operated Checks for Load Holding

Performance

� Pressure to 210 bar (3000 psi)

� Flows to 38 l/min (10 gpm)

� Fast Response Times

� Low Leakage Spools

� Low Pressure Drop

� Pilot Operation

World Product

� Sold Worldwide

� Mobile and Stationary Markets

Proven Technology

� Unique Product Features

� Unique Assembly and Testing MethodsIncreases Reliability

� Stack Design Lowers Installation Cost

� Electrohydraulic Proportional Valves ForInfinitely Variable Flow

� Custom Module Designs for UniqueApplications

Reliability / Durability

� Long Service Life

� Continuous Duty Solenoids

5



5

Technical Specifications

Design

Stackable and stand alone two-stage, pilot-operatedvalves in gray iron housings with hardened steelspools.

Mounting Configuration

Foot or plate mountings available for horizontal orvertical configuration

Installation Position

The valves may be mounted in any orientation.

Electrical Connections

Several terminations and voltages to choose from(see page 32).

Port Connections

All ports are standard SAE O-ring boss ports.See Order Code (p. 6) or Outline Drawings (p. 45) forspecific port sizes.

Stack Size

One to eight valve modules per stack.

Corrosion Resistance

Iron housing are painted black. Other external partsare zinc plated.

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Technical Data:

6

ZMC and ZMV Electrohydraulic ValvesTechnical Information

Electrohydraulic Control Valves ZMC Module Specifications

8

ZMC Module Specifications

The ZMC series offers flexibility for designing anelectrohydraulic system to meet your exact require-ments. It is comprised of a family of solenoid-oper-ated valve modules, each designed for the optimumcontrol of a particular function. All ZMC modulesshare a common mounting and porting pattern. Thisallows a ZMC valve stack using any combination ofmodules to be assembled for an exact application.With ZMC modules, a single hydraulic power source(i.e. pump) can supply multiple actuating require-ments.

Normally open and normally closed configurationsare available for most valves. Field convertible con-figurations are available for the unload valves. If theZMC stack is in a normally open mode, a ZMC unloadvalve (ZMC-UVx or ZMC URx) is used as a systeminlet and bypass module.

This typical ZMC stack consists of several modules to operate a grain harvesting combine's auxiliary functions.Header control and unloading auger operation are examples of auxiliary functions controlled by the valve stackin the schematic below. Any combination of ZMC modules could be included to customize the valve stack for aparticular application.

Typical ZMC Stack

SAE-10X

Unload Relief

SAE-8X

Unloading Clutch Cylinder SpeedLateral Tilt

X

Flow Divider

SAE-10 SAE-6 SAE-8 SAE-8

X

Unload Relief

SAE-8

Header-Raise/Lower Reversible Motor Drive

SAE-6X

Unloading Auger SwingReel Lift

X

SecondarySAE-8

SAE-10

X

SAE-8 SAE-8

SAE-8SAE-8 SAE-8 SAE-8 SAE-6

ZMC-URO ZMC-34C ZMC-34X ZMC-LFS

ZMC-PFD ZMC-URO ZMC-PPV ZMC-34X ZMC-LFS ZMC-34X

X

X

Pressure ReducerZMC-PRV

X

Reel Fore/Aft

SAE-8 SAE-8

ZMC-34XReverserZMC-SOV

Pin


7



9

ZMC - UVO Module:2-Position/2-Way Normally Open Unload Valve

UVO Pressure Drop Curve

UVO Cut-away

UVO Schematic

Description

The UVO module is a two-position, two-way solenoid-operated poppet valve. This module allows a stackassembly to operate in an open center configuration.This reduces power consumption by unloading flowto tank when it is not required by the actuator.

The UVO module is normally open. It is designed forlow pressure drop at high flows.

Operation

The valve will dump flow to tank when the solenoid isde-energized. When the valve is energized the pilotwill block flow and build pressure in the spring cham-ber of the main poppet, forcing it closed. Then flowcan be ported through the pressure gallery to anothervalve and the hydraulic function.

Specifications

Gauge Port

T

P

De-Energized Position

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Outlet to Tank

Pressure Gallery

Tank Gallery

050100150200250300350400

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20

0 10 20 30 40 50 60 70

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P - T


8



10

ZMC - UVC Module:2-Position/2-Way Normally Closed Unload Valve

UVC Pressure Drop Curve

UVC Cut-away

UVC Schematic

Inlet Pressure

Outlet to Tank

Pressure Gallery

Tank Gallery

Description

The UVC module is a two-position, two-way solenoid-operated poppet valve. This module allows a stackassembly to operate in an closed center configura-tion.

The UVC module is normally closed. It is designed forlow pressure drop at high flows.

Operation

The valve will dump flow to tank when the solenoid isenergized. When the valve is de-energized the pilotwill block flow and build pressure in the spring cham-ber of the main poppet, forcing it closed. Flow canthen be ported through the pressure gallery to an-other valve and the hydraulic function.

Specifications

Gauge Port

T

P


050100150200250300350400

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20

0 10 20 30 40 50 60 70

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P - T

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9



11

ZMC - UVF Module:2-Position/2-Way Field Convertible Unload Valve

UVF Pressure Drop Curve

UVF Cut-away

UVF Schematic

Inlet Pressure

Outlet to Tank

Pressure Gallery

Tank Gallery

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Description

The UVF module is a two-position, two-way solenoid-operated poppet valve. This module allows a stackassembly to operate in an open center or closedcenter configuration.

The UVF module's normal mode is field convertible.A field conversion adjustment screw allows it to bechanged between a normally open and a normallyclosed configuration. The initial setting is open.

Operation

The valve will dump flow to tank when the solenoid isde-energized. When the valve is energized the pilotwill block flow and build pressure in the spring cham-ber of the main poppet, forcing it closed. Then flowcan be ported through the pressure gallery to anothervalve and the hydraulic function.

Specifications

Gauge Port

T

P


050100150200250300350400

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20

0 10 20 30 40 50 60 70

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P - T


10



12

ZMC - URO Module:2-Position/2-Way Normally Open Unload Valve with Integral Relief

Description

The URO module is a two-position, two-way solenoid-operated poppet valve with an integral cartridge-stylerelief valve. This module allows a stack assembly tooperate in an open center configuration. This re-duces power consumption by unloading flow to tankwhen it is not required by the actuator. It includes arelief valve for system pressure protection.

The URO module is normally open. It is designed forlow pressure drop at high flows.

Operation

The module will dump flow to tank when the solenoidis de-energized. When the valve is energized the pilotwill block flow and build pressure in the spring cham-ber of the main poppet, forcing it closed. Then flowcan be ported onward to another valve and themechanical application.

The pilot-operated relief valve is a full flow valve thatwill open at any time pressure is higher than the valvesetting. The valve pressure setting is based on a38 l/min (10 gpm) flow rate. It is set with an adjustablescrew and available with a tamper-proof cap.

Specifications

URO Pressure Drop Curve

URO Cut-away

URO Schematic

Gauge Port

T

P


Relief Valve Adjustment

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Inlet Pressure

Outlet to Tank

Pressure Gallery

Tank Gallery

050100150200250300350400

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20

0 10 20 30 40 50 60 70

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P - T


11



13

URF Pressure Drop Curve

URF Cut-away

URF Schematic

Inlet Pressure

Outlet to Tank

Pressure Gallery

Tank Gallery

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ZMC - URF Module:2-Position/2-Way Field Convertible Unload Valve with Integral Relief

Description

The URO module is a two-position, two-way solenoid-operated poppet valve with an integral cartridge-stylerelief valve. This module allows a stack assembly tooperate in an open center configuration. This re-duces power consumption by unloading flow to tankwhen it is not required by the actuator. It includes arelief valve for system pressure protection.

The URF module's normal mode is field convertible.A field conversion adjustment screw allows it to bechanged between a normally open and a normallyclosed configuration. The initial setting is open.

Operation

The module will dump flow to tank when the solenoidis de-energized. When the valve is energized the pilotwill block flow and build pressure in the spring cham-ber of the main poppet, forcing it closed. Then flowcan be ported onward to another valve and themechanical application.

The pilot-operated relief valve is a full flow valve thatwill open at any time pressure is higher than the valvesetting. The valve pressure setting is based on a38 l/min (10 gpm) flow rate. It is set with an adjustablescrew and available with a tamper-proof cap.

Specifications

Gauge Port

T

P


050100150200250300350400

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20

0 10 20 30 40 50 60 70

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P - T


12



14

ZMC - PRV Module:Pressure Reducing Valve

Description

The PRV module contains a cartridge-style, pilot-operated pressure-reducing and -relieving valve. Thisvalve provides a reduced pressure in all modules inthe stack downstream of the PRV. This pressure ismaintained regardless of flow.

Operation

The valve is normally open to flow downstream.When the pressure setting of the valve is reached thevalve will close to stop flow while maintaining thereduced pressure downstream. If downstream pres-sure rises above this setting, the valve will open andrelieve that pressure to tank.

Specifications

PRV Pressure Drop Curve

PRV Schematic

PRV Cut-away

Gauge Port

Pressure Gallery In

Tank Gallery

Pressure Gallery Out

(Reduced Pressure)

Gauge Port

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0

20

40

60

80

100

0 1 2 3 4 5 6 7 8 9 10

0 5 10 15 20 25 30 35

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

Setting = 100 bar (1500 psi)

35 bar (500 psi)

70 bar (1000 psi)

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13



15

ZMC - PFD Module:Priority Flow Dividing Valve

Description

The PFD module is used to split flow into two parts(e.g. for two sections of stack). The priority flow isconstant and sent through the priority pressure gal-lery. This flow is pressure compensated to maintainconstant priority flow regardless of load pressure.Excess flow is ported through the secondary pres-sure gallery for use in another set of valves or it canbe sent through an optional external port.

Operation

Inlet flow passes through the orifice at the end of thespool and passes through the spool center and out tothe priority pressure gallery. The pressure drop acrossthis orifice causes the spool to shift right against thespring. The spool then meters excess flow to thesecondary port.

Specifications

PFD Pressure Drop Curve

PFD Cut-away

PFD Schematic

Secondary Optional

Inlet Pressure

Secondary Through Tube

Port

Tank Gallery

Inlet Pressure

Secondary (Optional)

Priority Through Tube

Port

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0

5

10

15

20

25

0102030405060708090

0 20 40 60 80 100120140160180200

0 2 4 6 8 10 12

Flo

w (

gpm

)

Flo

w (

l/min

)

Pressure Drop (psi)

Pressure Drop (bar)

Inlet Flow

Priority Flow


14



16

ZMC - DPV Module:3-Position/3-Way Demand Priority Valve

Description

The DPV module is a priority flow control valve. It isused to supply priority flow to a steering valve. Ex-cess flow is bypassed to the module pressure gallery.This module also contains a dynamic load sense portwhich can be connected to a steering motor loadsense port. This allows the motor to demand flowfrom the valve when it is required.

Operation

When no flow is required by the steering motor, theload sense line is connected to the tank through themotor and the priority flow is blocked. Priority portpressure causes the spool to shift, diverting flow tothe valve module's pressure gallery. When steeringflow is required, a variable orifice in the externalsteering motor's load sense line narrows sending apressure signal to the spring end of the spool. Thiscauses the spool to shift diverting a portion of the flowto the priority port. The amount of priority port flow iscontrolled by the load sense line pressure. Priorityport pressure is limited by an externally adjustablerelief cartridge connected to the load sense line.

Specifications

DPV Pressure Drop Curve

DPV Cut-away

DPV Schematic

Pressure

Priority

Load Sense

Adjustable

Relief

Inlet Pressure

Load Sense Priority

Port

Pressure Gallery

(Secondary Pressure)

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Load Sense Pressure vs. Priority Flow

0

400

800

1200

1600

2000

0

20

40

60

80

100

120

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

0 2 4 6 8 10 12 14 16 18

Load

Sen

se P

ress

ure

(psi

)

Load

Sen

se P

ress

ure

(bar

)

Flow (gpm)

Flow (l/min)

Load = 70 bar (1000 psi)



0

50

100

150

200

250

300

350

0

5

10

15

20

0 2 4 6 8 10 12 14 16

0 10 20 30 40 50 60

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

Inlet - Secondary(Priority Blocked)


15



17

ZMC - SOV Module:2-Position/2-Way Pilot-Operated Poppet Valve

Description

The SOV module is a normally closed two-position,two-way solenoid-operated poppet valve. It iscommonly used to control flow to a motor or otherunidirectional actuators.

It is designed for low pressure drop and minimalleakage.

Operation

The valve is spring-biased closed. Energizing thesolenoid will allow the pilot valve to open which drainsthe poppet spring chamber. Inlet flow overcomes thespring and opens the poppet. Flow is then channeledthrough the work port.

Specifications

SOV Pressure Drop Curve

SOV Schematic

SOV Cut-away

Pressure Gallery

Tank Gallery

Work Port (C1)

C1


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0

50

100

150

200

250

300

0

5

10

15

20

0 2 4 6 8 10 12 14 16

0 10 20 30 40 50 60

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

C1-P


16



18

ZMC - 240 Module:2-Position/4-Way Criss-Cross Pilot-Operated Spool Valve

Description

The 240 module is a two-position, four-way spoolvalve. It is commonly used as directional control fordual-acting clutch cylinders.

This module is designed to accept orifice plugs orunidirectional orifice plates in the work ports. Pleasesee page 37 for information on selecting orifice size.

Operation

The spool is spring-biased to one flow path. Energiz-ing the solenoid will allow the pilot valve to openwhich supplies inlet pressure to the other end of thespool. This pressure will overcome the spring andshift the spool.

Specifications

240 Pressure Drop Curve

240 Schematic

240 Cut-away


C2 C1

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Pressure Gallery

Tank Gallery

Work Port (C2)

Work Port (C1)

0

10

20

30

40

50

60

00.5

11.5

22.5

33.5

4

0 0.5 1 1.5 2 2.5 3 3.5 4

0 2 4 6 8 10 12 14

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

P-C2

C1-T

C2-T


17



19

ZMC - 24C Module:2-Position/4-Way Closed Center Pilot-Operated Spool Valve

Description

The 24C module is a two-position, four-way spoolvalve. The valve is closed in de-energized mode. It iscommonly used for dual-acting, spring-returned cyl-inders, or unidirectional motors.


Operation

The spool is spring-biased to a center-blocked posi-tion. Energizing the solenoid will allow the pilot valveto open which supplies inlet pressure to one end ofthe spool. This pressure will overcome the spring andshift the spool.

Specifications

24C Pressure Drop Curve

24C Schematic

24C Cut-away

Pressure Gallery

Tank Gallery

Work Port (C1)

Work Port (C2)

C2 C1


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0

5

10

15

20

25

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

C2-T


18



20

ZMC - 340 Module:3-Position/4-Way Figure Four Pilot-Operated Spool Valve

Description

The 340 module is a three-position, four-way solenoid-operated spool valve. It is commonly used as direc-tional control for dual-acting cylinders or bidirectionalmotors.


Operation

The spool is spring-biased to the center position.Energizing either solenoid will allow the pilot valve toopen which supplies inlet pressure to one end of thespool. This pressure will overcome the centeringspring and shift the spool. The dual-solenoid designallows flow to be channeled in either direction.

Specifications

340 Pressure Drop Curve

340 Schematic

340 Cut-away

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Pressure Gallery

Tank Gallery

Work Port (C1)

Work Port (C2)

C1 C2


0

50

100

150

200

250

300

0

5

10

15

20

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

P-C2

C1-T

C2-T


19



21

ZMC - 34C Module:3-Position/4-Way Closed Center Pilot-Operated Spool Valve

Description

The 34C module is a three-position, four-way solenoid-operated spool valve. It is commonly used as direc-tional control for dual-acting cylinders or bidirectionalmotors.


Operation

The spool is spring-biased to the center-blockedmode. Energizing either solenoid will allow the pilotvalve to open which supplies inlet pressure to oneend of the spool. This pressure will overcome thecentering spring and shift the spool. The dual-solenoiddesign allows flow to be channeled in either direction.

Specifications

34C Pressure Drop Curve

34C Schematic

34C Cut-away

Pressure Gallery

Tank Gallery

Work Port (C1)

Work Port (C2)

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C1 C2


0

50

100

150

200

250

300

0

5

10

15

20

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

P-C2

C1-T

C2-T


20



22

ZMC - 34X Module:3-Position/4-Way Figure Four Pilot-Operated Spool Valve with P-O Checks

Description

The 34X module is a four-way, three-position solenoid-operated spool valve with single or dual pilot-operatedchecks for load holding. It is commonly used asdirectional control for dual-acting cylinders or bidirec-tional motors.


Operation

The spool is spring-biased to the center position.Energizing either solenoid will allow the pilot valve toopen which supplies inlet pressure to one end of thespool. This pressure will overcome the centeringspring and shift the spool. The dual-solenoid designallows flow to be channeled in either direction.

The pilot-operated checks are poppet style valvesdesigned for low leakage. The checks will open whenpilot pressure is 1/5 of the load pressure plus thespring crack pressure. Standard crack pressure is 7bar (100 psi).

Specifications

34X Pressure Drop Curve

34X Cut-away

34X Schematic

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oitaRtoliP 1:5

erusserPkcarC rab7 isp001

Pressure Gallery

Tank Gallery

Work Port (C1)

Work Port (C2)

C1 C2


0

100

200

300

400

500

600

700

05

1015202530354045

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

P-C2

C1-T

C2-T


21



23

ZMC - 34Y Module:3-Position/4-Way Closed Center Pilot-Operated Spool Valve with P-O Checks

Description

The 34Y module is a four-way, three-position solenoid-operated spool valve with single or dual pilot-operatedchecks for load holding. It is commonly used asdirectional control for dual-acting cylinders or bidirec-tional motors.


Operation

The spool is spring-biased to the center-blockedposition. Energizing either solenoid will allow the pilotvalve to open which supplies inlet pressure to oneend of the spool. This pressure will overcome thecentering spring and shift the spool. The dual-solenoiddesign allows flow to be channeled in either direction.

The pilot-operated checks are poppet style valvesdesigned for low leakage. The checks will open whenpilot pressure is 1/5 of the load pressure plus thespring crack pressure. Standard crack pressure is 7bar (100 psi).

Specifications

34Y Pressure Drop Curve

34Y Cut-away

34Y Schematic

Pressure Gallery

Tank Gallery

Work Port (C1)

Work Port (C2)

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oitaRtoliP 1:5

erusserPkcarC rab7 isp001

C1 C2


0

100

200

300

400

500

600

700

05

1015202530354045

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1

P-C2

C1-T

C2-T


22



24

ZMC - PPV Module:3-Position/3-Way Normally Closed Pilot-Operated Poppet Valve

Description

The PPV module is a three-position, three-way poppetvalve. It is commonly used as directional control forsingle-acting cylinders.

This module also contains built in pressure protectionfor the work port, poppet type checks on the outlet,and two manually adjustable flow controls for theraise and lower functions.

The PPV module is designed with poppets to offerminimal leakage (2 drops/min) and low pressuredrop.

Operation

The poppets are spring-biased closed. Energizingeither solenoid will open the pilot valve which will ventthe main poppet spring chamber. Pressure will over-come the spring and shift the poppet open. Energiz-ing the Raise poppet will pressurize the work port.Energizing the Lower poppet will depressurize thework port.

Specifications

PPV Pressure Drop Curve

PPV Schematic

PPV Cut-away

RAISELOWER

Pressure Gallery

Tank Gallery

Work Port (C1)

C1


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(Housing Is Not to Scale)

050100150200250300350400450

0

5

10

15

20

25

30

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C

C-T


23



25

ZMC - LFS Module:Standard Low Flow Valve

Description

The LFS module is a three-way, three-position sole-noid-operated poppet valve. It is commonly used asdirectional control for single-acting cylinders with lowflow requirements. This module also contains pres-sure protection for the work port.

Operation

The direct-acting poppets are spring-biased closed.Energizing the solenoid will open the poppets andallow flow to or from the work port.

Specifications

LFS Pressure Drop Curve

LFS Cut-away

LFS Schematic

Pressure Gallery

Tank Gallery

Work Port (C1)

C1


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esiaR 510. 30.

rewoL 514. 75.

LFS Cracking Pressure Curve

01002003004005006007008009001000

0

10

20

30

40

50

60

0 0.5 1 1.5 2 2.5 3 3.5 4

0 2 4 6 8 10 12 14

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1 (1.02mm [.040"] orifice)C1-T (1.02mm [.040"] orifice)P-C1 (2.69mm [.106"] orifice)C1-T (2.69mm [.106"] orifice)

•

••

• • • •05001000150020002500300035004000

0

50

100

150

200

250

0.02 0.04 0.06 0.08 0.1 0.12

0.5 1 1.5 2 2.5 3

Cra

ckin

g P

ress

ure

(psi

)

Cra

ckin

g P

ress

ure

(bar

)

Orifice Size (in)

Orifice Size (mm)


24



26

ZMC - LFH Module:High Pressure Low Flow Valve

Description

The LFH module is a three-way, three-position sole-noid-operated poppet valve. It is commonly used asdirectional control for single-acting cylinders with lowflow requirements. It has a higher cracking pressurefor use with higher pressure flows. This module alsocontains pressure protection for the work port.

Operation

The direct-acting poppets are spring-biased closed.Energizing the solenoid will open the poppets andallow flow to or from the work port.

Specifications

LFH Pressure Drop Curve

LFH Cut-away

LFH Schematic

Pressure Gallery

Tank Gallery

Work Port (C1)

C1


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esiaR 51. A/N

rewoL 57. A/N

LFH Cracking Pressure Curve

01002003004005006007008009001000

0

10

20

30

40

50

60

0 0.5 1 1.5 2 2.5 3 3.5 4

0 2 4 6 8 10 12 14

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

P-C1 (1.02mm [.040"] orifice)C1-T (1.02mm [.040"] orifice)P-C1 (2.69mm [.106"] orifice)C1-T (2.69mm [.106"] orifice)

•

••

• • ••

0

1000

2000

3000

4000

5000

6000

050

100150200250300350400450

0.02 0.04 0.06 0.08 0.1 0.12

0.5 1 1.5 2 2.5 3

Cra

ckin

g P

ress

ure

(psi

)

Cra

ckin

g P

ress

ure

(bar

)

Orifice Size (in)

Orifice Size (mm)


25


Electrohydraulic Control Valves ZMV Module Specifications

27

ZMV Module Specifications

Description

ZMV modules are electronic proportional valveassemblies used to control flow to a motor or othertype of actuator. They include pressure compensa-tion to accurately control flow regardless of loadpressure. A manually adjustable override is availableto bypass the proportional electrical valve. ZMV mod-ules are stand alone units and are not stackable.

ZMV modules are available in open center (21O and21P) and closed center (21C and 21L) valve configu-rations. The open center module can include a PowerBeyond port to channel excess flow to another func-tion (21P). The closed center module can come withload sensing capability (21L).

Typical applications include variable motor speedcircuits on combines, salt spreader applications ontrucks, and hydraulic motor conveyers.

Operation

The module's pilot valve is spring-biased normallyclosed. When a pulse width modulated (PWM) signalof 35 to 100 Hz is applied to the solenoid, the valve willopen proportionally to the current. The compensatingspool maintains a constant pressure drop across thepilot valve (or manual valve) and therefore pressurecompensates the priority flow.

A potentiometer and electronic driver on page 35 ora joystick control on page 36 may be used to supplythe valve input signal.


26



28

ZMV-21O: Open Center Proportional Flow Control Valve

Description

The ZMV 21O valve is designed for open centersystems (e.g. fixed displacement pumps). Controlledflow is pressure compensated. Excess flow is alwaysbypassed to tank.

Specifications

21O Pressure Drop vs Flow Curve

21O Schematic

21O Cut-away

C

P

T

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dellortnoC 41–8/7EAS01#

knaT 41–8/7EAS01#

egnaRycneuqerFMWP zH001-53

egnaRtnerruCMWP spmA2.1-0

:wolFerusserP nim/l67 mpg02

dellortnoC nim/l83 mpg01

1925/2200

.025

.031

Inlet Pressure

Tank

Controlled

Manual Override

21O Flow vs Current Hysteresis Curve

0

20

40

60

80

100

120

0

1

2

3

4

5

6

7

8

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

35 bar (500 psi)70 bar (1000 psi)140 bar (2000 psi)

Work Port Load

012345678910

0

5

10

15

20

25

30

35

0 0.2 0.4 0.6 0.8 1 1.2 1.4

Flo

w (

gpm

)

Flo

w (

l/min

)

Current (Amps)


27



29

ZMV-21P: Open Center Proportional Flow Control Valve with Power Beyond

Description

The ZMV-21P valve is designed for open centersystems (fixed displacement pumps). Controlled flowis pressure compensated. A bypass function unloadsexcess flow to the Power Beyond port. This flow is notpressure compensated.

Specifications

21P Pressure Drop vs Flow Curve

21P Schematic

21P Cut-away

1925/2200

.025

.031

Inlet Pressure

Tank

Controlled

Manual Override

Power Beyond

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dnoyeBrewoP 41–8/7EAS01#

knaT 02–61/7EAS4#





C

P

P B

T

21P Flow vs Current Hysteresis Curve

0

20

40

60

80

100

120

012345678

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

35 bar (500 psi)70 bar (1000 psi)140 bar (2000 psi)

Work Port Load

012345678910

0

5

10

15

20

25

30

35

0 0.2 0.4 0.6 0.8 1 1.2 1.4

Flo

w (

gpm

)

Flo

w (

l/min

)

Current (Amps)


28



30

ZMV-21C: Closed Center Proportional Flow Control Valve

Description

The ZMV-21C valve is designed for closed centersystems (variable displacement pumps).

Specifications

21C Pressure Drop vs Flow Curve

21C Schematic

21C Cut-away

.025

Inlet Pressure

Tank

Controlled

Manual Override

C

P T

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21C Flow vs Current Hysteresis Curve

012345678910

0

5

10

15

20

25

30

35

0 0.2 0.4 0.6 0.8 1 1.2 1.4

Flo

w (

gpm

)

Flo

w (

l/min

)

Current (Amps)

0

500

1000

1500

2000

2500

020406080

100120140160

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

35 bar (500 psi)

140 bar (2000 psi)

70 bar (1000 psi)


29



31

ZMV-21L: Closed Center Load-Sensing Proportional Flow Control Valve

Description

The ZMV-21L valve is designed for closed centerload sense systems (variable displacement pumps).

Specifications

21L Pressure Drop vs Flow Curve

21L Schematic

21L Cut-away

C

P T

LS

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.025

.031

Inlet Pressure

Tank Load Sense

Controlled

Manual Override

21L Flow vs Current Hysteresis Curve

012345678910

0

5

10

15

20

25

30

35

0 0.2 0.4 0.6 0.8 1 1.2

Flo

w (

gpm

)

Flo

w (

l/min

)

Current (Amps)

0

500

1000

1500

2000

2500

020406080

100120140160

0 2 4 6 8 10 12

0 5 10 15 20 25 30 35 40 45

Pre

ssur

e D

rop

(psi

)

Pre

ssur

e D

rop

(bar

)

Flow (gpm)

Flow (l/min)

140 bar (2000 psi)

35 bar (500 psi)

70 bar (1000 psi)


30

ZMC and ZMV Electrohydraulic ValvesTechnical InformationConfiguration Options

Electrohydraulic Control Valves Configuration Options

32

Configuration Options

Solenoids

General Description

ZMC and ZMV valves utilize the same solenoiddesign. This two piece design consists of an encap-sulated coil and a metal enclosure.

Resistance and Wattage:Continuous duty coil at 20° C (70° F):

Duty Rating:Rated voltage at 50°C (120°F):

Temperature Range:Class H, -40°C to 82°C (-40°F to 180°F)

Lead Wires:20 gauge, 18” long

Encapsulating Material:Cyglass

Arc Suppression Diode (Optional):IN4004

Coil Nut Torque:

110VAC solenoids are internally rectified. They arerated for reverse voltage spikes of 400 volts maxi-mum.

Standard solenoids are not hermetically sealed. Con-sult Sauer-Sundstrand Application Engineering re-garding applications requiring waterproof solenoids.

Several terminations, voltages, and diodes are avail-able. Intermittent solenoids are used to improveresponse time. Consult duty cycle ratings when usingintermittent duty solenoids.

Specifications

:ytuDlioC suounitnoC tnettimretnI

egatloVytuD)CDV(

ecnatsiseR(Ω)

rewoP)W(

ecnatsiseR(Ω)

rewoP)W(

6 6.3 01 -- --

21 5.41 01 6.3 04

42 2.75 01 5.41 04 sevlaVCMZ mN3.7 fbl•ni56

sevlaVVMZ mN8.2 fbl•ni52

ytuDsuounitnoC ± %02

ytuDtnettimretnI ± %02

Solenoid Temperature Rise Curve

0

50

100

150

200

250

300

-20

0

20

40

60

80

100

120

140

0 20 40 60 80 100 120 140 160

Tem

pera

ture

(°F

)

Tem

pera

ture

(°C

)

Time (minutes)

Continuous Duty

Intermittent Duty

Standard solenoids are not hermetically sealed. Contact QCC regarding applications requiring waterproof solenoids.

31

ZMC and ZMV Electrohydraulic ValvesTechnical InformationConfiguration OptionsElectrohydraulic Control Valves Configuration Options

33

Solenoid Outline Drawings

A variety of solenoids are available to choose from. See the Order Code on page 6 for available voltages. (Matingconnectors are not included with solenoid.)

Grommet / Wire Leads Conduit / Wire Leads

DIN 43650

Weather Pack 12010973

51.8 [2.04]

41.7 [1.64]

Wire Leads 18" L.G.

Rubber Grommet

Coil

Cover

35.3 [1.39]

51.8 [2.04]

41.7 [1.64]

17.5 [11/16]

1/2 NPS Conduit Connector

Coil

Cover

Wire Leads 18" L.G.

A(+)

B(-)

P/N 12010973

51.82 [2.04]

41.66 [1.64]

152.4 [6.0]

12.7 [1/2]Cover

Coil

[0.386]

[0.472]

21

11.99

9.80

[2.04]51.82 [1.74]

44.20 [1/8]3.18

[1-1/8]28.56

[1-1/4]31.75

41.66[1.64]

32.26[1.27]

32



34

Single Stud

Military Spec. 3104 (Cannon)

Double Stud

Amp Junior

Cover

Coil Studs 10-32 Thd.

35.05 [1.38]

8.64 [11/32]

28.96 [1.14]

41.66 [1.64]

51.82 [2.04]

12.7 [1/2]

Coil

Coil Washer

Cover

Coil Studs 10-32 Thd.

35.05 [1.38]

8.64 [11/32]

12.7 [1/2]

28.96 [1.14]

41.66 [1.64]

51.82 [2.04]

12.7 [1/2]

Coil

PIN 1

3.18[1/8]

[2.04]51.82 [1.74]

44.20

[1-1/8]28.58

[1-1/4]31.75

32.26[1.27]

[0.47]11.94

[0.663]16.8441.66[1.64]

55.6 [2–3/16]

17.5 [11/16]

41.7 [1.64]

51.8 [2.04]

Polarity (If Polarized)

A+

Locating Pin

B

Cannon Connector MS3102A-10SL-4P

Cover

Coil

33



35

Control Device Options

SCA-35: Single Channel Amplifier

Description

The SCA-35 single channel amplifier is designed tooptimize the performance of ZMV series pressure-compensated flow control valves in handling flowsfrom 4 to 38 l/min (1 to 10 gpm).

The SCA-35's current feedback provides low hyster-esis by compensating for fluctuations in input voltageand solenoid resistance. Output overload and arcsuppression diode protection is included in the SCA-35. However, arc suppression is also recommendedfor the valve's coil.

The SCA-35 is fully encapsulated for protection againsthumidity, vibration, and shock.

Operation

The control signal to the driver is generated by apotentiometer or an analog signal. The amplifierprovides no output until the control input is greaterthan 1% of the internal reference voltage (+5 VDC).

A 2 Ω, 2.25 watt resistor with 292° of travel is available

Output vs. Input

from Sauer-Sundstrand (P/N K10197, Knob P/NK04860).

This system allows the operator to turn off the valvewithout switching input power. The addition of op-tional resistors allows the driver to maximize theresolution of the set point potentiometer. These maybe fixed resistors or a variable potentiometer.

Specifications

A +Coil B -Coil C +12V D Ground E Input F +V

88.9 [3.500]

98.4 [3.875]

4.76 mm [3/16"] Dia. Mounting Holes

52.4

[2.0

62]

Note: No Output from 0 - .05V

Outline Dimensions

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suounitnoCmumixaMtnerruCtuptuO

pmA1.1

langistupnI k2> Ω pmA1>,CDV5-0,

snoitcennoC

ebtsumsrotcennoCgnitaM().yletarapesderedro

kcaprehtaeWdrakcaPN/P(rotcennocgnitamnip6

.)99751021

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snoisnemiDegakcaP93x45x99

mm5.1x1.2x9.3

ni

noitatneirOgnitnuoM yna

egnaRerutarepmeT 58ot04- °C 581ot04- °F

0

100

0 100

% C

oil C

urre

nt

% Pot Rotation or Input Voltage(0V) (5V)

from QCC (P/N K10197, Knob P/NK04860).

34



36

Electronic Control Handle: MCH41CL2287

Description

This panel mount control handle is designed to oper-ate the ZMV series flow control valves. It is enclosedin a plastic case and includes a non-locking knob andfriction-held control.

Combined with any ZMV valve, this driver will providea complete pressure compensated flow control sys-tem to handle 4 to 38 l/min (1 to 10 gpm).

The control handle’s current feedback provides re-peatability by compensating for fluctuations in inputvoltage and solenoid resistance. Output overloadand arc suppression protection is included in thecontrol handle. However, arc suppression is alsorecommended for the coil.

Operation

The control signal to the driver is generated by apotentiometer located in the control handle. Theamplifier provides no output until the control input isgreater than 1% of the internal reference voltage (+5VDC). This allows the operator to turn off the valvewithout switching input power.

Specifications

Outline DrawingsFor other control handle options consult SAS BLN 95-9049

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ycneuqerFgnitarepO zH001

tnerruCtuptuOmumixaM pmA1.1

langistupnI k2> Ω pmA1>,CDV5-0,

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PANEL CUTOUT AND MOUNTING PLATE

138 (5.43)

7 (0.275)

33,3 (1.31)

66,6 (2.62)

124 (4.88)

150,5 MAX (5.93)

85,5 MAX (3.37)

4,5 ± 0.008 (2)

MOUNTING PLATE

CUSTOMER PANEL

30° REF30° REF

2

147,3 MAX (5.8)

97,6 MAX (3.84)

114,6 MAX (4.51)

29,5 (1.16)

60,4 (2.38)

121,3 MAX (4.78)

44,4 (1.75)

64,1 MAX 2.52

PANEL MOUNT SIDE VIEW OF ALL

PANEL MOUNT

REMOVE COLLAR THAT RETAINS BOOT

AND DISCARD

35


37

Orifice Plugs / Plates

Standard threaded orifice plugs are available to mountin the ZMC-240, 24C, 340, 34C, 34X, and 34Ymodules. Orifice plates are also available to place in

the work ports of the above modules. Below aregraphs showing the orifice size required based on theflow and pressure drop desired.

Orifice Size for Specific Flow and Pressure Drop

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.1

0.1

Flo

w

Pressure Drop

34.5 68.9 137.9 206.8 bar[500] [1000] [2000] [3000] [psi]

[10] 37.8

[8] 30.3

[6] 22.7

[4] 15.1

[2] 7.6

[12] 45.4

[gpm] l/min

[0] 0

2.54 mm

2.29

in

2.03

1.78

1.52

1.27

1.02

0.76

36


38

Required Assembly Hardware

Through Tubes / Plug Tubes

All ZMC modules utilize common pressure and tankgalleries running through the length of the valvestack. Each through tube includes two sets of O-ringsand back up rings for elimination of leakage betweenthe modules.

Three tie bolts are used in each ZMC valve stack tojoin the modules together. The through tubes assistin aligning the modules into the stack. This eliminatesthe spool binding that occurs due to over torquing thetie bolts or mounting to uneven surfaces.

Plug Tube Through Tube

Back Up RingO-Ring

Plug tubes are used to seal the pressure and tankgalleries at the end of the valve stack. To add mod-ules to an assembled valve stack the plug tubes canbe removed and replaced by a through tube toaccommodate additional modules.

Plug tubes can also be used to isolate a particularmodule's pressure and/or tank gallery from the rest ofthe stack.

Tube Part Numbers

Plug Tubes

Through Tubes

P T

End Module

Next Module

ebuTgulP 6009182Z

ebuThguorhTdradnatS 1102182Z

ebuThguorhTgnoL 2102182Z

Plug Tubes

37



39

Stacking Configurations

Valve assemblies can be mounted in any direction,but for clarity a valve stack with “L” brackets isreferred to as “Horizontal” and a stack without “L”brackets as “Vertical” (see figures).

"L" feet mounting brackets and end plates are pro-vided to support the complete stack. The brackets arestamped from steel and zinc plated. Tie bolts areused to fasten the stack together. Pressure and tankconnections are made either through the appropriate

end caps or through the Unload modules (UVx, URx).Plug tubes are inserted in the end modules to seal thepressure and tank galleries.

An alternative mounting style is to use the tie bolts tofasten the valve stack to a customer-supplied metalplate.

All ZMC modules can also be utilized as stand aloneline mount valves.

"Horizontal" Stack Assembly "Vertical" Stack Assembly

"L" Mounting Bracket with Port Access"L" Mounting Bracket

113 [4.44]

Z4001002 Z4001001

77.8 [3.06]

83.6 [3.25]

143 [5.63]

152 [6.00]

35.1 [1.38]

34.3 [1.35]

10 [.41] TYP

20 [.78] TYP

6.9 [.27] R

5.5 [.22]

20 [.78] TYP

10 [.41] TYP

34.3 [1.35]

6.9 [.27] R

83.6 [3.25]

143 [5.63]

152 [6.00]

77.8 [3.06]

113 [4.44]

Z4001003 Z4001004

35.1 [1.38]

5.5 [.22]

38



40

kcatSniseludoMforebmuN 1 2 3 4 5 6 7 8

delbmessAyrotcaFN/PtiKgnikcatS

Z6917001

Z6917002

Z6917003

Z6917004

Z6917005

Z6917006

Z6917007

Z6917008

delbmessanUN/PtiKgnikcatS

Z6911001

Z6911002

Z6911003

Z6911004

Z6911005

Z6911006

Z6911007

Z6911008

REBMUNTRAP NOITPIRCSED

1102182Z EBUT-URHT - 2 4 6 8 01 21 41 NUMBER

OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL - - - - - - - -

6009182Z EBUTGULP 4 4 4 4 4 4 4 4

1009228Z TUNXEH 3 3 6 6 6 6 6 6

1000328Z REHSAWKCOL 6 6 6 6 6 6 6 6

4001004Z TEKCARBTHGIR 1 1 1 1 1 1 1 1

3001004Z TEKCARBTFEL 1 1 1 1 1 1 1 1

SDOR-EIT )mm(HTGNEL)ni(

9000428Z 3 2.67 3 - - - - - - -

6100428Z 4/3-4 6.021 - 3 - - - - - -

1008028Z 4/1-7 2.481 - - 3 - - - - -

8008028Z 9 6.822 - - - 3 - - - -

5108028Z 4/3-01 0.372 - - - - 3 - - -

2208028Z 2/1-21 5.713 - - - - - 3 - -

9208028Z 4/1-41 9.163 - - - - - - 3 -

6308028Z 61 4.604 - - - - - - - 3

Table A: Horizontal Configuration, Two Mounting Brackets, No End Caps

Stacking Kits

Currently six stacking kit configurations are offered.These are listed in tables on the following pages.

The tapped end plates are attached to the stack viathe through-bolt.

A stacking kit part number is determined as follows:

1. Decide if a Horizontal or Vertical configuration(described above) is required.

2. Determine if an end cap with ports is required. If nounload module (UVx, URx) is used, an end capwith ports must be used. This allows the pressureand tank lines to be connected to the valve stack.

3. Go to the table that corresponds to the configura-tion required. Under the column indicating thecorrect number of modules choose the corre-sponding part number for either a factory-as-sembled stack or an unassembled stack kit.

Factory assembled stacks will be completely as-sembled and pressure-tested as a stack. A single"stack" part number will be generated for reordering.

When ordering please supply either the stack partnumber or all module order codes (page 6) andcorresponding stacking kit part numbers.

epyTkcatS erawdraH elbaT

latnoziroH,stekcarBgnitnuoMowT

spaCdnEoNA

latnoziroHenO,stekcarBgnitnuoMowT

thgiRstroPhtiwpaCdnEB

latnoziroHenO,stekcarBgnitnuoMowT

tfeLstroPhtiwpaCdnEC

latnoziroHowT,stekcarBgnitnuoMowT

stroPhtiwspaCdnED

lacitreV,setalPdnEowT

deppaTenOE

lacitreVenO,etalPdnEdeppaTenO

stroPhtiwpaCdnEF

These stacking kits include all the hardware to as-semble up to eight individual valve modules into asingle valve stack. “End caps with ports” must beordered separately due to individual port require-ments. The standard end cap is P/N Z4001010, thishas two SAE-8 ports (see page 45 for others).

For vertical stacks, tapped end plates eliminate theneed for nuts and washers at the end of the stack.

39



41



Z6918001

Z6918002

Z6918003

Z6918004

Z6918005

Z6918006

Z6918007

Z6918008


Z6912001

Z6912002

Z6912003

Z6912004

Z6912005

Z6912006

Z6912007

Z6912008



OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL 2 2 2 2 2 2 2 2

6009182Z EBUTGULP 2 2 2 2 2 2 2 2

1009228Z TUNXEH 3 3 6 6 6 6 6 6

1000328Z REHSAWKCOL 6 6 6 6 6 6 6 6

3001004Z TEKCARBTFEL 1 1 1 1 1 1 1 1

1001004Z TEKCARBTHGIRDETROP 1 1 1 1 1 1 1 1


6100428Z 4/3-4 6.021 3 - - - - - - -

2200428Z 61/5-6 3.061 - 3 - - - - - -

1008028Z 4/1-7 2.481 - - 3 - - - - -

8008028Z 9 6.822 - - - 3 - - - -

8108028Z 2/1-11 1.292 - - - - 3 - - -

5208028Z 4/1-31 5.633 - - - - - 3 - -

2308028Z 51 0.183 - - - - - - 3 -

9308028Z 4/3-61 4.524 - - - - - - - 3

Table B: Two Mounting Brackets, One End Cap with Ports Right, Horizontal Configuration

Table C: Two Mounting Brackets, One End Cap with Ports Left, Horizontal Configuration



Z6922001

Z6922002

Z6922003

Z6922004

Z6922005

Z6922006

Z6922007

Z6922008


Z6916001

Z6916002

Z6916003

Z6916004

Z6916005

Z6916006

Z6916007

Z6916008



OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL 2 2 2 2 2 2 2 2

6009182Z EBUTGULP 2 2 2 2 2 2 2 2

1009228Z TUNXEH 3 3 6 6 6 6 6 6

1000328Z REHSAWKCOL 6 6 6 6 6 6 6 6

4001004Z TEKCARBTHGIR 1 1 1 1 1 1 1 1

2001004Z TEKCARBTFELDETROP 1 1 1 1 1 1 1 1


6100428Z 4/3-4 6.021 3 - - - - - - -

2200428Z 61/5-6 3.061 - 3 - - - - - -

1008028Z 4/1-7 2.481 - - 3 - - - - -

8008028Z 9 6.822 - - - 3 - - - -

8108028Z 2/1-11 1.292 - - - - 3 - - -

5208028Z 4/1-31 5.633 - - - - - 3 - -

2308028Z 51 0.183 - - - - - - 3 -

9308028Z 4/3-61 4.524 - - - - - - - 3

40



42

Table E: Two End Plates, One Tapped, Vertical Configuration



Z6919001

Z6919002

Z6919003

Z6919004

Z6919005

Z6919006

Z6919007

Z6919008


Z6913001

Z6913002

Z6913003

Z6913004

Z6913005

Z6913006

Z6913007

Z6913008



OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL 4 4 4 4 4 4 4 4

6009182Z EBUTGULP - - - - - - - -

1009228Z TUNXEH 3 3 6 6 6 6 6 6

1000328Z REHSAWKCOL 6 6 6 6 6 6 6 6

1001004Z TEKCARBTHGIRDETROP 1 1 1 1 1 1 1 1

2001004Z TEKCARBTFELDETROP 1 1 1 1 1 1 1 1


6100428Z 4/3-4 6.021 3 - - - - - - -

2200428Z 61/5-6 3.061 - 3 - - - - - -

4008028Z 8 2.302 - - 3 - - - - -

5108028Z 4/3-01 0.372 - - - 3 - - - -

2208028Z 2/1-21 5.713 - - - - 3 - - -

9208028Z 4/1-41 9.163 - - - - - 3 - -

6308028Z 61 4.604 - - - - - - 3 -

3408028Z 4/3-71 8.054 - - - - - - - 3

Table D: Two Mounting Brackets, Two End Caps with Ports, Horizontal Configuration



Z6920001

Z6920002

Z6920003

Z6920004

Z6920005

Z6920006

Z6920007

Z6920008


Z6914001

Z6914002

Z6914003

Z6914004

Z6914005

Z6914006

Z6914007

Z6914008



OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL - - - - - - - -

6009182Z EBUTGULP 4 4 4 4 4 4 4 4

1009228Z TUNXEH - - 3 3 3 3 3 3

1000328Z REHSAWKCOL 3 3 3 3 3 3 3 3

7001004Z ETALPDNE 1 1 1 1 1 1 1 1

6001004Z ETALPDNEDEPPAT 1 1 1 1 1 1 1 1


9000428Z 3 2.67 3 - - - - - - -

6100428Z 4/3-4 6.021 - 3 - - - - - -

1008028Z 4/1-7 2.481 - - 3 - - - - -

8008028Z 9 6.822 - - - 3 - - - -

5108028Z 4/3-01 0.372 - - - - 3 - - -

2208028Z 2/1-21 5.713 - - - - - 3 - -

9208028Z 4/1-41 9.163 - - - - - - 3 -

6308028Z 61 4.604 - - - - - - - 3

41



43

Table F: One Tapped End Plate, One End Cap with Ports, Vertical Configuration



Z6921001

Z6921002

Z6921003

Z6921004

Z6921005

Z6921006

Z6921007

Z6921008


Z6915001

Z6915002

Z6915003

Z6915004

Z6915005

Z6915006

Z6915007

Z6915008


1102182Z EBUT-URHT 2 4 6 8 01 21 41 61 NUMBER

OF

PIECES

PER

KIT

2102182Z EBUT-URHTGNOL - - - - - - - -

6009182Z EBUTGULP 2 2 2 2 2 2 2 2

1009228Z TUNXEH - - 3 3 3 3 3 3

1000328Z REHSAWKCOL 3 3 3 3 3 3 3 3

7001004Z ETALPDNE - - - - - - - -

6001004Z ETALPDNEDEPPAT 1 1 1 1 1 1 1 1


5100428Z 2/1-4 3.411 3 - - - - - - -

2200428Z 61/5-6 3.061 - 3 - - - - - -

4008028Z 8 2.302 - - 3 - - - - -

1108028Z 4/3-9 6.742 - - - 3 - - - -

8108028Z 2/1-11 1.292 - - - - 3 - - -

5208028Z 4/1-31 5.633 - - - - - 3 - -

2308028Z 51 0.183 - - - - - - 3 -

9308028Z 4/3-61 4.524 - - - - - - - 3

Each valve module includes a nameplate affixed tothe housing. This information includes:

Model Number: This defines the specific unit.

Serial Number: This is used to identify the manufac-turing location, build date, and the sequence in thebuild.

saueCONTROL CONCEPTS, INC.

MODEL:SERIAL:

Module Identification

42

ZMC and ZMV Electrohydraulic ValvesTechnical InformationOutline Drawings

Electrohydraulic Control Valves Outline Drawings

45

Outline Drawings6.35

[0.25]

Z4001007—Thru Holes Z4001006—1/4-20 Tapped Holes

77.8 [3.06]

79.4 [3.13]

9.6 [0.38]

25.1 [0.99]

77.8 [3.06]

79.4 [3.13]

Z5013004

77.8 [3.06]

79.4 [3.13]

31.8 [1.25]

9/16–18 SAE O-Ring Boss

Z4001009


77.8 [3.06]

79.4 [3.13]

31.8 [1.25]

26.9 [1.06]

Z4001010

P

T

P

END CAPS

22.4 [0.88]

14.7 [0.58]

123.2 [4.85]

44.5 [1.75]


19.8 [0.78]

44.5 [1.75]

63.5 [2.50]


Adjustment Screws are for UVF only

129.3 [5.09]

P

T

22.4 [0.88]

44.5 [1.75]

14.7 [0.58]

65.8 [2.59]

123.2 [4.85]

44.5 [1.75]


108.1 [4.26]

19.8 [0.78]

27.4 [1.08]


Adjustment Screws are for URF only

129.3 [5.09]

P

T

ZMC-UVO, ZMC-UVC, ZMC-UVF ZMC-URO, ZMC-URF

END PLATES

43

ZMC and ZMV Electrohydraulic ValvesTechnical InformationOutline DrawingsElectrohydraulic Control Valves Outline Drawings

46

Pressure Inlet

1.50 [38.1]

SAE- 4Load Sense Port

71.6 [2.82]

145.5 [5.73]

34.0 [1.34]

144.5 [5.69]

44.5 [1.75]

22.3 [0.88]JIC #8 (37°)

Adjustable Relief

T

Priority Flow Out

SAE-10

Secondary Flow Out

Pressure In

Secondary Flow Out

28.6 [1.13]

25.4 [1.00]

29.2 [1.15]

15.2 [0.60]

140 [5.51]

44.5 [1.75]

68.6 [2.70]

T

T

Secondary Flow Out

Priority Flow Out

SAE-10

(optional) SAE-8

ZMC-PFD

ZMC-DPV

44



47

7/8-14 SAE O-ring

22.4 [0.88]

44.5 1.75

44.5 1.75

123.2 [4.85]

C1

P

T

C C

123.2 [4.85]

19.1 [0.75]

15.1 [0.59]

144.9 [5.70]

44.5 [1.75]

15.1 [0.59]

1/4-20 UNC Fixed Workport Orifice Threads

3/4–16 SAE O-ring Boss

P

T

C1C2

123.2 4.85

25.4 [1.00]

15.1 [0.59]

15.1 [0.59]

1/4–20 UNC Fixed Workport Orifice Threads


186.1 [7.33]

C1C2

P

T

ZMC-SOV

ZMC-240 ZMC-24C

82.5 [3.25]

140 [5.52]

T

Reduced Pressure

25.4 [1.00]

28.4 [1.12]

Reduced Pressure Out(optional) SAE-8

T

System Pressure

ZMC-PRV

45



48

190 [7.5]

9/16-18 SAE O-ring Boss

123.2 [4.85]

23 [0.91]

16.8 [0.66]

44.5 [1.75]

P

T

C1

P

T

123.2 4.85

25.4 [1.00]

15.1 [0.59]

15.1 [0.59]



186.1 [7.33]

C1C2

159.8 [6.29]

186.1 [7.33]

25.4 [1.00]



34.3 [1.35]

34.3 [1.35]

C2 C1

P

T

ZMC-340, ZMC-34C ZMC-34X, ZMC-34Y

ZMC-PPV

SAE-4

44.5 [1.75]

15.7 [0.62]

123.2 [4.85]

22.1 [0.87]

132 [5.18]

P

T

C1

ZMC-LFS, ZMC-LFH

7315 West Wilson AvenueChicago, IL 60656

708-867-5400www.websterproducts.com

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