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APPLICATIONS ■ Testing oil and gas wells with high flow

rates, high wellhead pressures, or the

presence of H2S

■ Wells with hazard operational analysis

needing a surface pressure barrier in

addition to the primary or master valve

BENEFITS ■ Prevent overpressure conditions

on downstream equipment

 ■ Provide immediate well closure in the

event of downstream equipment failure

 ■ Ensure reliable shut-in during harsh

environment operations

 ■ Reduce personnel exposure

in emergencies

 ■ Comply with environmental regulations

and reduce environmental risk

FEATURES ■ Fail-safe remote activation and auto-

matic well closure when loss of control

pressure occurs

 ■ Double metal-to-metal seals for

reliability in harsh environments

 ■ Normally equipped with hammer

unions, but can be fitted with Grayloc® 

or API-6A flanges

 ■ Compliance with API-6A (PSL-2 or 3,

PR2), H2S (NACE MR0175), and

Fluid Class DD specifications

The surface safety valve (SSV) is a hydraulically actuated fail-safe gate valve for testing oil and

gas wells with high flow rates (>8,000 bbl/d [>1,280 m3 /d] or 30,000,000 ft3 /d [>850,000 m3 /d]), high

pressures (>5,000 psi [>34 MPa]), or the presence of H2S. The SSV is used to quickly shut in

 the well choke manifold upstream in the event of overpressure, failure, a leak in downstream

equipment, or any other well emergency requiring an immediate shut-in.

The SSV is remotely operated by an emergency shutdown device (ESD), which can be triggered

automatically by high- or low-pressure pilot actuators. If an emergency occurs, this feature

reduces the possibility of personnel injuries.

A number of SSV models are available for different well conditions (pressures, temperatures,

and flow rates) and with various connections, such as Grayloc or API-6A flanges. All SSVmodels have interchangeable crossover connections and are protected by a compact,

removable lifting frame.

The SSV uses a proven metal-to-metal, double-sealing design for harsh environment operations

and complies with all applicable environmental requirements. All SSVs are manufactured under

Type Approval or Design Verification Review and provided with a Certificate of Conformity and

full quality file.

Surface Safety ValveFail-safe gate valve for testing wells with

high flow rates, high pressures, or H2S

Surface safety valve.

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www.slb.com/welltesting

Surface Safety Valve

*Mark of Schlumberger

Other company, product, and service names

are the properties of their respective owners.

Copyright © 2011 Schlumberger. All rights reserved. 10-TS-0016

Specifications

Model NominalSize, in

 WorkingPressure,psi [MPa]

Test Pressure,psi [MPa]

Temperature Class,degF [degC]

Inlet/OutletConnections

Skid TemperatureClass,degF [degC]

Part Number

SSV-F 31 ⁄ 8 5,000 [34] 10,000 [69] –20 to 250 [–29 to 121] 3-in Fig 1002 Female/Male –20 [–29] P579050

SSV-GB 21 ⁄ 16 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] 2-in Fig 1502 Female/Male –20 [–29] P490837

SSV-GH 31 ⁄ 16 10,000 [69] 15,000 [103] –20 to 350 [–29 to 177] 3-in Fig 1502 Female/Male –20 [–29] P798109

SSV-GK 31 ⁄ 16 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] 3-in Fig 1502 Female/Male –20 [–29] P497560

SSV-G 31 ⁄ 16 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] 3-in Fig 1502 Female/Male –20 [–29] P579049

SSV-GHC 31 ⁄ 16 10,000 [69] 15,000 [103] –20 to 350 [–29 to 177] 3-in Fig 1502 Female/Male –20 [–29] 100368524

SSV-GC 41 ⁄ 16 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] API Flange 41 ⁄ 16–BX155 –20 [–29] P490007

SSV-GCB 41 ⁄ 16 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] API Flange 41 ⁄ 16–BX155 –20 [–29] 100131104

SSV-GCC 41 ⁄ 16 10,000 [69] 15,000 [103] –50 to 350 [–46 to 177] API Flange 41 ⁄ 16–BX155 –50 [–46] 100244512

SSV-GCD 41 ⁄ 16 10,000 [69] 15,000 [103] –20 to 350 [–29 to 177] API Flange 41 ⁄ 16–BX155 –20 [–29] 100441762

SSV-GL 51 ⁄ 8 10,000 [69] 15,000 [103] –20 to 250 [–29 to 121] Grayloc 6 G52 –20 [–29] 100176331

SSV-HD 31 ⁄ 16 15,000 [103] 22,500 [155] –20 to 350 [–29 to 177] API Flange 31 ⁄ 16–BX154 –20 [–29] P792386

SSV-HF 31 ⁄ 16 15,000 [103] 22,500 [155] –20 to 350 [–29 to 177] API Flange 31 ⁄ 16–BX154 –20 [–29] 100443423

Connectors, Certifications, and Codes

Model Hydraulic Actuator Hard Facing(Colmonoy®)

Special SandService

Dimensions(L × W × H), ft [m]

 Weight,lbm [kg]

Applied Codes

Port Maximum WorkingPressure, psi [MPa]

SSV-F 1 ⁄ 2-NPT 3,000 [21] #5 No 3.77 × 1.97 × 3.87[1.15 × 0.60 × 1.18]

1,102 [500] API-6A (PSL-2, PR2), H2S (NACEMR0175), DNV† Rules, BS‡ 7072

SSV-GB 1 ⁄ 2-NPT 3,000 [21] #75 Yes 1.27 × 0.79 × 1.97[0.39 × 0.24 × 0.60]

850 [386] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-GH 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 3.87[1.30 × 0.60 × 1.18]

1,200 [544] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-GK 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 3.87[1.30 × 0.60 × 1.18]

1,200 [544] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-G 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 3.87

[1.30 × 0.60 × 1.18]

1,200 [544] API-6A (PSL-3, PR2), H2S (NACE

MR0175), DNV Rules, BS 7072SSV-GHC 1 ⁄ 2-NPT 5,000 [34] #75 No 4.27 × 1.97 × 4.32

[1.30 × 0.60 × 1.30]1,200 [544] API-6A (PSL-3, PR2), H2S (NACE

MR0175), DNV Rules, BS 7072,PED§ 97/23, CE§ marked

SSV-GC 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 4.59[1.30 × 0.60 × 1.40]

1,770 [803] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-GCB 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 4.59[1.30 × 0.60 × 1.40]

1,770 [803] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072,PED§ 97/23, CE marked

SSV-GCC 1 ⁄ 2-NPT 5,000 [34] #75 Yes 4.27 × 1.97 × 4.59[1.30 × 0.60 × 1.40]

1,770 [803] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-GCD 1 ⁄ 2-NPT 5,000 [34] #75 No 4.33 × 2.00 × 4.92[1.30 × 0.60 × 1.50]

2,100 [953] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072,PED§ 97/23, CE marked

SSV-GL 1 ⁄ 2-NPT 3,000 [21] #75 No 5.08 × 1.97 × 5.11

[1.55 × 0.60 × 1.56]

3,000 [1,361] API-6A (PSL-3, PR2), H2S (NACE

MR0175), DNV Rules, BS 7072

SSV-HD 1 ⁄ 2-NPT 3,000 [21] #75 No 4.27 × 1.97 × 4.07[1.30 × 0.60 × 1.24]

1,500 [680] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072

SSV-HF 1 ⁄ 2-NPT 5,000 [34] #75 No 4.27 × 1.97 × 4.72[1.30 × 0.60 × 1.44]

2,100 [953 ] API-6A (PSL-3, PR2), H2S (NACEMR0175), DNV Rules, BS 7072,PED†† 97/23, CE marked

  † Det Norske Veritas  ‡ Complies to British Standard Code of Practice for Inspection and Repair of Offshore  § Conformité Européenne  †† Complies with European Pressure Equipment Directive 97/23