7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 1/33

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 2/33

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 3/33

 All Pressure Relief Valves are designed to open when inlet

pressure is above the pilot setting

Pressure Sustaining Valves will maintain a minimum

upstream pressure.

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 4/33

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 5/33

X42N-2 Strainer Needle Valve

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 6/33

X44A Strainer Needle Valve

Provides external

pilot protection

 Adjustablerestriction – 

closing speed

control  Acts as the

connection to the

CRL Pilot

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 7/33

CV Speed Control

Restrictedflow

F r  e ef  l   ow 

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 8/33

CRL Relief Pilot Control

Normally closed

Opens on pressure rise

Senses inlet pressure

remotely

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 9/33

CRL Parts

Breakdown

Body with integral seat

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 10/33

CRL Animation

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 11/33Both are Direct Acting Regulators

CRL Pilot

Control

CRD Pilot

Control

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 12/33

55F Pressure

Relief Valve

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 13/33

High Pressure

CRL PilotControl:

CRL 100-300

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 14/33

CRL Adjustment Ranges

Higher pressures

available upon request

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 15/33

Regulator Spring Color 

Coding

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 16/33

50-01 Pressure Relief Valve

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 17/33

Model 50-36 Pressure Relief Valve

with Rapid Opening

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 18/33

Model 58-01 Pressure Relief valve with

Solenoid Shut-Off 

De-energize

to open

Energize

to open

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 19/33

Typical Pressure Relief Application

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 20/33

Check upstream pressure with gauge

Determine the psi per turn for that spring.

Back-off on CRL adjustment until valvebegins to open at a known pressure.

Turn adjusting screw in enough to set at

desired point.

CRL Troubleshooting

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 21/33

Installation: Costa Mesa, CA

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 22/33

Pressure Sustaining Application

Minimum

set point

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 23/33

92-01 Pressure

Reducing/Sustaining Valve

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 24/33

Installation: Mission Viejo, CA

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 25/33

Pressure Reducing-Pressure

Sustaining and Check Valve

Upper 

Zone

Lower Zone

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 26/33

Model 92-01 Pressure Reducing-

Pressure Sustaining Control Valve

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 27/33

Model 92-01 Basic Operation

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 28/33

Installation: Vista, CA

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 29/33

Typical Back Pressure Application

Well

Pump

Model 50-01

to distribution

system

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 30/33

50 Series Troubleshooting

The best method to check the function

of the 50 Series valve is to vary the

adjustment.

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 31/33

50 Series Troubleshooting

If the main valve

doesn’t open: 

Check pilot adjustment – 

set too high.

X42N-2 strainer/needle

valve is too far out. Down-stream ball valve

is closed.

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 32/33

50 Series Troubleshooting

If the main valve doesn’t close: 

Check system pressure – In a relief application

it may be doing its job! Pilot adjustment may be set too low.

Y-Strainer/ needle valve may be clogged – no

supply pressure to the cover.

Needle valve closed too tight or up-stream ball

valve closed.

Check main valve diaphragm.

7/27/2019 Cla-Val Pressure Relief R9-08

http://slidepdf.com/reader/full/cla-val-pressure-relief-r9-08 33/33

The Right Valve for the Job

CLA-VAL