seaboard brochure

7/22/2019 Seaboard Brochure

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SERVICE UNDER PRESSURE.SERVICE UNDER PRESSURE


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Wellhead Equipment and Gate Valves

API 6A and ISO 9001:2000

Contents

Casing Heads and SpoolsS-22 Casing Heads and Spools..............................................................................................1-2

Fas-Loc Wellhead System ....................................................................................................... 3

SMB-22 Multibowl System ....................................................................................................... 4

SS-L Buttweld Sub and CMH Hanger System ......................................................................... 4

Tubing Heads, Casing Hangers, Secondary SealsS Tubing Heads ....................................................................................................................... 5

SD Tubing Heads ..................................................................................................................... 5

SP, SP-H, and IP Secondary Seals ......................................................................................... 5S-22 Casing Hangers............................................................................................................... 6

S-22-NL Casing Hangers ......................................................................................................... 6

S-22-HL Casing Hangers ......................................................................................................... 6

Tubing Completion SystemsSM-E Tubing Hangers.............................................................................................................. 7

SM-T Tubing Hangers .............................................................................................................. 7

SM-E-CL Tubing Hangers ........................................................................................................ 8

SM-T-CL Tubing Hangers ........................................................................................................ 8

ESP Feed Through Systems ................................................................................................... 9

SD and SD-CL Dual Completion Hangers ............................................................................... 9Tension Tubing Hangers ......................................................................................................... 10

Slim Line Tubing Hangers ....................................................................................................... 10

Specialty EquipmentCommunication Slick Joint ...................................................................................................... 11

NW-A Casing Heads .............................................................................................................. 12

NW-B Diverter Heads ............................................................................................................. 12

Gate ValvesModel 500 Wedge Gate (3M/5M)..........................................................................................13-14

Model 1520 Wedge Gate (10M)............................................................................................13-14

Model 1540 Wedge Gate (10M/15M) ..................................................................................... 15Model 1540S Slab Gate (20M) ............................................................................................... 16

Model 640 Slab Gate (3M/5M)................................................................................................ 17

Model 1640 Slab Gate (10M/15M).......................................................................................... 17

Gate Valve Trim Chart ............................................................................................................. 18

Seaboard

Cover photograph courtesy of Jack Richburg Photography. Catalog and contentsSeaboard.


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Significant advantages of the S-22 bowl:

The Seaboard conventional wellhead system incorporates the S-22

straight bowl design with a 45 degree load shoulder.

S-22 Casing Heads and Spools

One bowl design that universally accepts slip-type or mandrel casing hangers

Low-weight hangers for tieback applications and high capacity hangers are also accommodated due tothe straight bowl and 45 degree load shoulder which diminishes hoop stress on the casing heads and

spools

Design concept is carried forward into the Fas-Loc and SMB-22 multibowl systems for componentinterchangeability and retention of superior design characteristics

Damage during drilling activities is minimized, thereby decreasing the frequency of maintenance and/or potential replacement

Wear bushings can enhance the protection of important sealing surfaces

Test plugs and wear bushings often wedge in tapered bowls under pressure, a possibility virtuallyeliminated with the S-22 bowl design

1


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System Features

Scope

o 2,000 through 20,000 PSI

o API 6A PSL-1 through PSL-4

o Appendix F Qualified

Top Connections

o API Flanges

o API Hubs

Bottom Connections

o Threaded

o Slip-on Weld

o NW-A Sliplock

o Baseplates (Welded or threaded)

Secondary Seals - Casing Spools

o Elastomer Seal Bushings (SP)

o High pressure Seal Bushings (SP-H)

o Integral Seal Bottoms (IPS)

Lockscrews (optional)

Outletso Threaded

o Studded

o Flanged

S-22 Casing Head Sizing Data

Rated Working Casing Top Flange Minimum Weight

Pressure Size (in.) Size (in.) PSI Bore (in.) (lbs.)

2,000 psi 20 21-1/4 2,000 19.00 1,550

3,000 psi 8-5/8 11 3,000 8.00 470

9-5/8 11 3,000 9.00 450

10-3/4 11 3,000 10.00 430

13-3/8 13-5/8 3,000 12.50 645

16 16-3/4 3,000 15.38 825

20 20-3/4 3,000 19.00 1,640

5,000 psi 8-5/8 11 5,000 8.00 720

9-5/8 11 5,000 9.00 617

10-3/4 11 5,000 10.00 600

13-3/8 13-5/8 5,000 12.50 675

16 16-3/4 5,000 15.38 1,655

20 21-1/4 5,000 19.00 1,825

Lockscrew Detail

S-22-R S-22-APS-22-R S-22-AP

Rated Working Bottom Flange Top Flange Minimum Weig

Pressure Size (in.) PSI Size (in.) PSI Bore (in.) (lbs

3,000 psi 11 3,000 11 3,000 10.00 74

13-5/8 3,000 11 3,000 10.00 105

16-3/4 3,000 11 3,000 10.00 114

16-3/4 3,000 13-5/8 3,000 12.50 117

21-1/4 2,000 13-5/8 3,000 12.50 145

20-3/4 3,000 16-3/4 3,000 15.38 271

5,000 psi 11 3,000 11 5,000 10.00 76

11 5,000 11 5,000 10.00 125

13-5/8 3,000 11 5,000 10.00 126

13-5/8 5,000 11 5,000 10.00 139

16-3/4 3,000 11 5,000 10.00 122

16-3/4 3,000 13-5/8 5,000 12.50 132

20-3/4 3,000 13-5/8 5,000 12.50 253

20-3/4 3,000 16-3/4 5,000 15.38 300

21-1/4 5,000 13-5/8 5,000 12.50 284

21-1/4 5,000 16-3/4 5,000 15.38 330

10,000 psi 13-5/8 5,000 11 10,000 10.00 219

16-3/4 5,000 11 10,000 10.00 238

16-3/4 5,000 13-5/8 10,000 12.50 290

21-1/4 5,000 13-5/8 10,000 12.50 336

S-22 Casing Spool Sizing Data


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The Fas-Loc wellhead system was developed to meet all of the needs of conventional equipment while reducing

much of the associated time, costs and risks. The Fas-Loc wellhead system significantly reduces rig time and

associated rig costs over those utilizing conventional wellhead equipment. For multiple well programs, thediverter adapter and BOP service adapters may be transferred from well to well, eliminating the time required to

nipple up and down between locations. Safety is enhanced with the Fas-Loc casing head by eliminating the

requirements for torch cutting and welding operations normally associated with casing head installation. Another

time saving feature is the ability to land the casing head through the BOP, eliminating the need to wait on

cement. The Fas-Loc casing head bowl is designed to accept standard slip hanger arrangements. Further

reducing time, the Fas-Loc tubing head makes up quickly without special tools. The Fas-Loc wellhead system

easily adapts to accommodate intermediate casing strings according to the requirements of the drilling program.

Overall system designed to save time/rig costs

Dedicated diverter adapter

o Transfers from well to well

o Makes up quickly with no special tools

Dedicated BOP service adapter

o Transfers from well to well

o Makes up quickly with no special tools

Increases safety by eliminating torch cutting/welding operations for casing head installation

Fas-Loc casing head is landed through BOP

o Eliminates waiting on cement

Fas-Loc casing head accepts standard sliphanger arrangements

Fas-Loc tubing head makes up quickly withoutspecial tools

Fas-Loc tubing head accepts any Seaboardtubing hanger arrangement

Fas-Loc system easily adapts to acceptintermediate casing string/spool if needed

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Fas Loc


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SMB-22 Multibowl Systems

SS-L Buttweld Sub and CMH Hanger SystemInstalling and removing the BOP stack is a time

consuming procedure performed each time aconventional head or spool is added during drilling

operations. During BOP removal, there is a potential

for disaster either through a blowout or injury to the

drilling crew. The compact SMB-22 multibowl wellhead

system eliminates the need for one nipple up by landing

multiple casing strings in one head.

The SMB-22 multibowl wellhead assembly is a full-

bore design. The lower casing hanger is fluted to allow

ample by-pass for circulating mud and cement. The seal

assembly, which lands on the flutes, also acts as a

support for the upper hanger. A wide choice of tubing

hanger designs are available for various service

conditions.

Emergency suspension systems are available for the

lower hanger.

The SS-L buttweld sub and CMH hanger is a versatile

wellhead system offering a flanged and non-flanged

means of nippling up a diverter system. Conductor and

surface casing can be run through the diverter, thus

saving time (one less nipple down), money, and safety.

Rig time is saved by utilizing the SM-E mandrel hanger

for the surface casing, which allows for faster installation

of a conventional wellhead, or multibowl system,

because no welding is required. The SS-L buttweld

sub system is flexible to most casing programs andoffers emergency equipment options.

Additional Features:

Conductor hanger may be tested externallyonce landed

Conductor hanger seals may be re-energized,if necessary

Surface casing hanger may be landed prior tocementing, eliminating the need to reciprocate

Annular seal for surface casing hanger maybe run through the diverter, locked in place

(flanged diverter head) and tested externally

Annular seal for surface casing hanger maybe re-energized, if necessary

All running/retrieving tools run on casing


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S Tubing Heads

SP, SP-H, and Double IP Seals

The S tubing head is designed to be full opening

even over 7-5/8 casing. The straight bowl and

45

load shoulder allows the use of one bowldesign for virtually all applications. A variety of

single and dual tubing hangers are available for

a wide array of service conditions and operating

preferences.

Multiple Completion Options

SD dual tubing heads are equipped with two

MC (multi-completion) guide pins located 180apart just above the 45 load shoulder. When

landing the dual tubing hanger, the MC guide

pins are run in to orient the tubing hanger

segments.

Tubing Head Bottom ConnectionsStandard bottom preparations for tubing heads

include single or double IP seals, SP or SP-H

packoff bushings. For IP secondary seal

configurations, the tubing head provides

injection ports through which plastic can be

injected to enhance the IP seal.

The SP seal is a simple press energized design comprised of an elastomer element sandwiched between two

compression plates. The assembly is retained in the pocket with a snap ring.

The SP-H seal is similar in design to the SP, but is better suited for use in higher pressure applications. The

assembly is retained in the pocket by a threaded ring.

The Double IP seal is ideal for use as crossover where moderately severe service is expected. Each seal is

plastic energized, which can also be tested via a port located between the seals to verify seal integrity.

S Tubing Head

SP

Secondary Seal

Double IP

Secondary Seal

SP-H

Secondary Seal

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S-22 Casing Hangers

The S-22 casing hanger is a slip style hanger which

automatically seals the casing annulus.

During installation, the hanger is wrapped around thecasing and the slip retaining screws are removed,

allowing the slips to ride down the internal taper. As

the casing slides through the hanger, the segmented

slips grab and wedge between the tapered bowl and

the casing. The annulus seal below the bowl is

automatically energized by the weight of the casing as

it is transferred through the slips to the 45 load shoulder

in the head or spool.

S-22 Casing Hanger

Casing weight must meet or exceed those listed in thechart to the right. If the minimum weight is not met, the

elastomer seal may not extrude sufficiently to seal

against the casings surface. If the casing weight is in

excess of 50% of the casing joint strength, the seal

may over-extrude and become ineffective. Alternate

hangers are available for these conditions.

The S-22-NL casing hanger is appropriate for no load

or mudline applications. The slips are set by pullingslight tension on the casing. When the tension is

released, the slight casing movement sets the slips.

The annulus seal above the slips is energized manually

after the BOP stack is removed.

TheS-22-HL

casing hanger accommodates loads inexcess of 50% of the casing joint strength. The double

wedge back slip design permits the same length of slip

to support a higher load without impinging the casing.

The design also features a positive stop which limits

extrusion of the seal.

S-22-HL Casing Hanger

Minimum Casing Loads for

S-22 Casing Hangers

Casing

Size

Bowl Sizes

11 13-5/8 16 20

4-1/2 - 5-1/2

7 - 7-5/8

8-5/8 - 9-5/8

10-3/4

13-3/8

55,000

40,000

58,000

77,000

150,000

S-22-NL Casing Hanger


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Single Completion Tubing Hangers and Adapters for Land Installations

SM-E Tubing HangersThe SM-E tubing hanger is a versatile design usingelastomer seals. The hanger can be equipped with a

suspension style control line preparation and isolation

seals on the neck to accommodate traditional control

line porting through the adapter. The control line porting

can be used or ignored without affecting the functioning

of the tubing hanger.

The tubing hanger consists of a main body, an

elastomer seal and a compression/support ring. The

annulus seal is automatically energized by the weight

of the tubing string. Extrusion of the seal is controlled

by a positive stop between the compression/support

ring and the hanger body. If the tubing weight is not

sufficient to extrude the seals, it will be energized by

the lockscrews used to retain the hanger in the bowl.

An internal profile is provided for setting a back pressure

valve.

SM-T Tubing HangersThe SM-T tubing hanger uses a metal taper design on

the hangers neck to isolate the production flow. Metal

seals are far superior to elastomers making this hanger

suitable for more critical service applications.

During installation, the hanger is landed and the

lockscrews run in to retain the hanger and energize

the annulus seal. The metal seal on the hanger neck is

energized by making up the adapter. The taper on the

ID of the adapter slightly opposes the OD of the tubing

hanger neck, causing the neck to deform slightly. This

deformation is safely within the elastic limits of the yieldstrength of the hanger material, permitting the

connection to be broken and remade repeatedly without

damaging the sealing surfaces.


valve.

7

SM-T Tubing Hanger

SM-E Tubing Hanger


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Single Completion Tubing Hangers and Adapters for Offshore Installations

SM-T-CL Tubing HangersThe SM-T-CL tubing hanger provides a continuous

control line setting while using metal seals in the hanger

neck to isolate the production flow. Metal seals are farsuperior to elastomers making this hanger suitable for

more critical service applications.


elastomer seal and a compression ring. During

installation, the hanger is landed and the lockscrews

run in to retain the hanger and energize the annulus

seal. The metal seal on the hanger neck is energized

by making up the adapter. The taper on the ID of the

adapter slightly opposes the OD of the tubing hanger

neck, causing the neck to deform slightly. This

deformation is safely within the elastic limits of the yield

strength of the hanger material, permitting theconnection to be broken and remade repeatedly without

damaging the sealing surfaces.

The continuous control line is supported and sealed

above and below the hanger with common ferrule-type

fittings. The control line exits through the adapter and

is sealed off in a specially designed exit block.


valve.

SM-E-CL Tubing HangersThe SM-E-CL tubing hanger provides a continuouscontrol line setting using elastomer seals in the both

hanger bowl and hanger neck.


elastomer seal and a compression ring. During

installation, the hanger is landed and the lockscrews

run in to retain the hanger and energize the annulus

seal. The neck of the tubing hanger uses S seals to

seal against the straight bore of the adapter.

The continuous control line is supported and sealed

above and below the hanger with common ferrule-type

fittings. The control line exits through the adapter and

is sealed off in a specially designed exit block (shown)or nipple/tapped bull plug arrangement.


valve.

SM-E-CL Tubing Hanger

SM-T-CL Tubing Hanger


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ESP Feed Through Systems

SD and SD-CL Dual Completion Tubing Hangers

When the oil is heavy or reservoir pressure is depleted,

it is often necessary to resort to artificial lift methods

for bringing the oil to the surface. A commonly used

device is the electric submersible pump.

The pump is made up into the bottom of the tubing

string as it is run in the hole. An electric cable, which

will eventually transmit power to the pump, is run side

by side with the tubing string. The ESP tubing hanger

is eccentrically aligned, offsetting the tubing string to

allow passage of the electric cable through the hanger

to the outside. A mandrel with a uniquely designed,

pigtail style electric plug connector on each end creates

a totally sealed conduit for passing the electricity from

the outside power source through the wellhead housing

and into the production annulus.

ESP equipment is designed for hostile environmentsand can be adapted for temperatures up to 350F,

pressures up to 10,000 psi and for highly corrosive

service.

Adapter Assemblies

ESP systems are often used in rework applications.

Adapter assemblies are available in common sizes and

pressure ratings to connect to existing wellheads

without removing the tubing head. They are completely

compatible with the ESP hangers and mandrels and

provide the simplest method for converting a well to an

ESP system.

Dual completion tubing hangers are segmented designs

available for both offshore and onshore applications

(with or without continuous control lines). Both designs

can be used in the SD tubing head.

The annulus seal is energized by running in the

lockscrews after both hanger segments are landed. TheSD-CL hangers provide a control line nipple which

supports and seals the control line while protecting it

from the extrusion seal. Both the SD and SD-CL designs

use seal subs which are installed after the hanger is

landed to seal on the dual adapter.

An internal profile is provided in each hanger segment

for setting a back pressure valve.

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Slim Line Tubing Hangers

Tension Tubing Hangers

The SL tubing hanger system is designed for use over

TLC (Tubingless Completion) equipment. Once

production through a larger tubing string begins to slow,

the operator may choose to install a smaller tubing string

in order to continue lifting fluids. In this application, the

SL tubing head can be installed between the TLC

adapter and lower master valve. The SL tubing head

features a retractable tag pin that allows for full opening

bore for passage of back pressure valves and ensurespositive tubing hanger location. The SL tubing hanger

is landed through the tree, secured in place and may

begin taking production. If so desired, the operator may

also choose to utilize a crossover adapter in order to

install a smaller bore tree over the installed SL tubing

hanger.

The Tension tubing head and hanger system was

designed to allow the tubing string to be lowered into

the production casing in order to provide an overpull

of the string weight prior to engaging the load pins in

the landed position. This compensates for elongation

due to temperature variations during the completion

of the well to ensure that the tubing string is not

exposed to buckling that can occur with conventional

tubing hanger applications. Tension tubing hangers

utilize an MRS metal seal between the hanger neck

and adapter to isolate the production flow. A continuous

control line feature is standard with the Tension tubing

hanger system that allows the control line to exit

through the adapter and be sealed in a specially

designed exit block. The Tension tubing head and

hanger system is available in applications up to 20,000psi and all API trim levels.

Additional Features:

Fluted thru-bore Tension hanger available forliquid or N

2type annular completions

BOP slick joint utilized to maintain N2

in

annulus during hanger completion

DHCV pressure controlled during completions


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The Communication Slick Joint was designed to allow

operators to reciprocate tubing up to 24 feet for

displacement during completion or de-completion of a

well where hydraulic control lines are necessary for

downhole control valves. An annular seal is maintained

with the S wrap around tubing hanger, and an external

shroud provides protection for the DHCV line during

controlled reciprocation while under pressure.

Additional Features Include:

Separate suspension nut eliminates gallingduring installation and allows for easy make-

up without requiring the rotation of the tree

PolyPak seals separate DHCV ports,expediting installation and maximizing years

of trouble-free service

Metal seal between coupling and adapterprovides leak-proof integrity

External fitting allows testing of flow bore seal

Modular two piece design allows fordisassembly and seal access without

disturbing tubing

Shroud has an integral stop to prevent overextending during reciprocation

Avai lable for work ing pressures through15,000 psi

Communication Slick Joint

11


14/20

Shutting in a production platform during installation of welded casing and diverter heads is costly, yet necessary

for the safety of personnel and the environment. The only safe way to continue platform activities uninterrupted

is to use an alternative connection method which requires no open flame. The NW series of diverter and casingheads provides a simple, safe and reliable solution to this problem.

NW-A and NW-B Connectors

Diverter Heads

The NW-B diverter head consists of a full-open bore and friction pin locking mechanism which makes the head

easily removable. The low pressure seal is formed by injectable elastomers.

Casing Heads

The NW-A casing head consists of a standard S-22 bowl with a manually locked slip mechanism. The seal

between the conductor and the wellhead is achieved with injectable elastomers.

NW-A Casing Head

NW-B Diverter Head


15/20

Model 500 Gate ValvesSeaboard International Model 500 gate valves are designed with an expanding split gate and non-rising stem.

Metal-to-metal sealing technology is utilized throughout the valve to increase performance integrity. These valves

are available for applications from 3,000 to 5,000 psi. Trim levels are available to suit all types of oil and gas

service. Flanged or threaded configurations are available in standard bore sizes from 2-1/16 through 6-3/8.

Model 1520 Gate ValvesSeaboard International Model 1520 gate valves are designed with an expanding split gate and a pressure-

balancing stem. Metal-to-metal sealing technology is utilized throughout the valve to increase performance

integrity. These valves are available for applications through 10,000 psi. Trim levels are available to suit all types

of oil and gas service. Flanged end configurations are available in standard bore sizes from 1-13/16 through 4-

1/16.

Model 500

13

Model 1520


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Key Features:Full-Bore Through-Conduit Design

All Model 500/1520 gate valves util ize a full-bore

through-conduit seat/gate design.

Maximizes valve life by eliminating the collectionof destructive particles

Unrestricted flow reduces turbulence and pressuredrops

Sealing TechnologyDependable seals are critical to valve safety and

performance. Model 500/1520 gate valves utilize

reliable metal-to-metal sealing technology.

Seals are stable, thermally insensitive, and environ-

mentally resistant Utilized in the gate/seat, body/ bonnet, and body/

seat interfaces

Parallel Expanding Gate DesignThe expanding action of the gate provides a positive

mechanical seal across the seats both upstream and

downstream.

Wedging only occurs in the full open or full closedpositions

Provides a positive mechanical seal regardless of

line pressure

Low Operating TorqueEase of operation is inherent in the design of all Model

500/1520 gate valves.

The 500 features non-rising stems using durableAcme threads

Roller thrust bearings are isolated from cavity pres-sure

Lubrication ports in body

Pressure Venting CapabilitiesA safe method for bleeding pressure from the valve

cavity is essential.

Wedge gates in the full closed position provide apositive mechanical seal isolating valve cavity from

wellbore pressure

Block and bleed design isolates line pressure

Body LubricationAlthough Model 500/1520 gate valves do not require

lubrication to seal, only the highest quality lubricantsare used to reduce operating torque and inhibit

corrosion.

Gate guides act as skirts, assisting in retention oflubricants

Prevents potential corrosion and collection of sol-ids

In-line RepairabilityA routine maintenance program keeps repairs to a

minimum. Should repairs be necessary, vital valve

components may be replaced.

Gates, seats, stems and other critical parts are eas-ily replaced in the field

Stem packing can be re-energized while the valveis under pressure

Extended Stem LifeAs the primary operating component of the valve, Model

1520 gate valve stems are designed with threads

located outside of the valve cavity.

Stem threads are not exposed to wellbore particles

Design of the stem/stem nut interface offers en-hanced galling resistance


17/20

Key Features:Full-Bore Through-Conduit Design

Maximizes valve life by eliminating the collection ofdestructive particles

Unrestricted flow reduces turbulence and pressuredrops

Sealing Technology

Seals are stable, thermally insensitive, and environ-mentally resistant

Utilized in the gate/seat, body/ bonnet, and body/seat interfaces

Parallel Expanding Gate Design

Wedging only occurs in the full open or full closedpositions

Provides a positive mechanical seal regardless ofline pressure

Low Operating Torque

Roller thrust bearings are isolated from cavity pres-sure

Lubrication ports in body

In-line Repairability Gates, seats, stems and other critical parts are easily

replaced in the field

Stem packing can be re-energized while the valveis under pressure

Reduction of Lost Body Lubrication Gate guides act as skirts, assisting in retention of

lubricants

Prevents potential corrosion and collection of solids

Pressure Venting Capabilities

Wedge gates in the full closed position provide a

positive mechanical seal isolating valve cavity fromwellbore pressure

Block and bleed design isolates line pressure

Extended Stem Life

Stem threads are not exposed to wellbore particles

Design of the stem/stem nut interface offers en-hanced galling resistance

Model 1540 Gate ValvesSeaboard International Model 1540 gate valves are designed with a forged body, expanding split gate, and a

pressure-balancing stem. Metal-to-metal sealing technology is utilized throughout the valve to increase

performance integrity. These valves are available for applications from 10,000 to 15,000 psi. Trim levels are

available to suit all types of oil and gas service. Flanged end configurations are available in standard bore sizes.

15

Model 1540


18/20

Seaboard International Model 1540S gate valves are designed with a forged body, bi-directional slab gate,

pressure balancing stem, metal-to-metal sealing technology, and stem backseating capability. The one-piece

slab gate utilizes floating seats that co-opt line pressure to supply the sealing force. Stem packing is chemically

inert, using spring energizing rings which require no adjustment or plastic injection. These valves are specificallydesigned for 20,000 psi service. Trim levels are available to suit all types of oil and gas service. Flanged end

configurations are available in standard bore sizes.

Model 1540S Gate Valves

Key Features:Metal-to-Metal Seals

Seals are stable, thermally insensitive, andenvironmentally resistant

Utilized in the gate/seat, body/ bonnet, and stem/bonnet backseat

Selective Backseat

Provides unparalleled safety during venting, lubri-cation, and stem packing replacement

Premature backseating is prevented by a positivestop in the bearing cap that controls stem travel

Allows stem packing replacement without remov-ing valve from service

Backseat can be employed without shifting posi-tion of the gate

Slab Gate

Excessive force is not required to close and sealthe valve

Potential for valve cavity pressure lock is eliminated

Assures smooth operation during extreme thermalcycles

Floating Seats

Allows bi-directional use

Spring-energized seals pre-load the seats to main-tain constant contact with gate, ensuring low pres-

sure sealing

Requires no lubrication to seal

Threaded Packing Gland

Transfers stem packing loads to the bonnet, pro-tecting the bearing assemblies

Accommodates replacement of bearings and shearpin at full pressure differential

No Body Penetrations

A single lubrication injection port is located outboardof the backseat in the each bonnet allowing cavity

lubrication or venting of trapped pressure after

backseat operation

In-line Repairability

Gates, seats, stems and other critical parts are eas-ily replaced without the use of special tools

Stem packing can be replaced while the valve isunder pressure

Model 1540S


19/20

Key Features:Metal-to-Metal Seals

Seals are stable, thermally insensitive, and envi-ronmentally resistant

Utilized in the gate/seat, body/ bonnet, and stem/bonnet backseat

Selective Backseat

Provides unparalleled safety during venting, lubri-cation, and stem packing replacement

Premature backseating is prevented by a positivestop in the bearing cap that controls stem travel.

This design feature also protects the metal-to-metal

sealing surface

Allows stem packing replacement without remov-ing valve from service

Backseat can be employed without shifting posi-tion of the gate

Slab Gate

Excessive force is not required to close and sealthe valve

Potential for valve cavity pressure lock is eliminated

Assures smooth operation during extreme thermalcycles

Floating Seats

Allows bi-directional use

Spring-energized seals pre-load the seats to main-tain constant contact with gate, ensuring low pres-

sure sealing

Requires no lubrication to seal

Threaded Packing Gland

Transfers stem packing loads to the bonnet, pro-tecting the bearing assemblies

Accommodates replacement of bearings and shearpin at full pressure differential

No Body Penetration

A single lubrication injection port is located abovethe backseat in the bonnet allowing cavity lubrica-

tion or venting of trapped pressure after backseat

operation

Non-Rising Stem

Reduces tearing of stem packing

Acme thread enhances durability and lowers torquerequirements

Stem Shear Pin

Protects valve stem from being damaged due to

excessive torque

In-line Repairability

A routine maintenance program keeps repairs to aminimum. Should repairs be necessary, vital valve

components may be replaced

Gates, seats, stems and other critical parts are eas-ily replaced without the use of special tools

Stem packing can be replaced while the valve isunder pressure

Seaboard International Model 640 and Model 1640 gate valves are designed with a bi-directional slab gate,

metal-to-metal sealing technology, and stem backseating capability. The one-piece parallel sided slab gate

utilizes floating seats that co-opt line pressure to supply the sealing force. Stem packing is chemically inert,

using spring energizing rings which require no adjustment or plastic injection. These valves are available forapplications from 3,000 to 15,000 psi. Trim levels are available to suit all types of oil and gas service. Flanged

end configurations are available in standard bore sizes from 1-13/16 through 5-1/8.

Model 640 /1640 Gate Valves

17

Model 1640


20/20

Service Conditions API Trim Body Bonnet Gate Seats Stem

General Service AA 4130 4130 Alloy (1) Alloy (1) 4140

Non-Corrosive

General Service BB 4130 4130 410SS (1) 410SS (1) 17-4PHSS

Slightly Corrosive

General Service CC 410SS 410SS 410SS (1) 410SS (1) 17-4PHSS

Moderate to Highly Corrosive

Sour Service DD 4130 4130 Alloy (1) Alloy (1) 4140

Non-Corrosive

Sour Service DD-1 4130 4130 Alloy (2) Alloy (2) 17-4PHSS

Non-Corrosive

Sour Service EE 4130 4130 410SS (1) 410SS (1) 17-4PHSS

Slightly Corrosive

Sour Service EE-1 4130 4130 410SS (2) 410SS (2) 17-4PHSS

Slightly Corrosive

Sour Service EE-7 4130 (4) 4130 (4) 17-4PHSS (1) 17-4PHSS (1) 17-4PHSS

Slightly Corrosive

Sour Service FF 410SS 410SS 410SS(1)

410SS(1)

17-4PHSSModerate to Highly Corrosive

Sour Service FF-1 410SS 410SS 410SS (2) 410SS (2) 17-4PHSS

Moderate to Highly Corrosive

Sour Service HH 4130 (3) 4130 (3) Inconel Stellite Inconel

Highly Corrosive

Notes:

(1) Nitrided

(2) Stellite Overlay or Equivalent

(3) Inconel Clad

(4) Xylan Coated

Seaboard Gate Valve Trim Chart

The chart above includes Seaboard standard trim designations and are subject to change. Additional

trims are available to meet special customer requirements and well conditions. Please contact Seaboard

for assistance with trim requirements.

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