Surface safety valve (SSV) is a hydraulically or pneumatically actuated fail-safe gate valve for testing oil and gas wells with high flow rates, high pressures, or the presence of H2S.
The SSV is used to quickly shut down the well in the event of overpressure, failure, a leak in downstream equipment, or any other well emergency requiring an immediate shut down.
The valve is used in conjunction with an emergency shut down system(ESD) and normally installed upstream of the choke manifold. The valve is remotely operated either manually by push button or automatically triggered by high/low pressure pilots.
When a remote station is activated the emergency shut down panel acts as a receiver for the air signal. The unit translates this signal into a hydraulic response which bleeds the control line pressure off of the actuator and closes the valve.
Specifications
· Nominal diameter: 2.1/16” ~ 7.1/16”
· Working pressure: 2000 PSI ~ 20000 PSI
· Working media: oil, gas, H2S service
· Working temperature: LU ( 51℉/-46℃ ~ 250℉/121℃)
· Material grades: AA, BB, CC, DD, EE, FF, HH
· Specification level: PLS1 ~ PSL4
· Performance level: PR2
Features
· Provide instant shut down to the well in case of an emergency, less than 10 seconds
· Reduce personnel exposure during emergencies
· Optional fire protection (fusible loop)
· separate stems can make them easy disassembling and maintaining
· Fail-safe and remote activation and automatic well closure
· Hammer union, hub, or threaded end connections are available
Technical Specification:
Size (inches)
Working Pressure
psi（bar）
Temperature Rating ℉(℃)
Dimensions
L x W x H(mm)
Weight (kg)
3.1/8”
5000 psi (345)
-20 ~ 250
(-29 ~ 121)
500 x 350 x 1100
490
4.1/16”
5000 psi (345)
-20 ~ 250
(-29 ~ 121)
600 x 400 x 1100
555
5.1/8”
5000 psi (345)
-20 ~ 250
(-29 ~ 121)
600 x 400 x 1100
600
3.1/16”
10000 psi (690)
-20 ~ 250
(-29 ~ 121)
500 x 350 x 1200
795
4.1/16”
10000 psi (690)
-20 ~ 250
(-29 ~ 121)
1300 x 600 x 1800
910
3.1/16”
15000 psi (1034)
-20 ~ 250
(-29 ~ 121)
1300 x 600 x 1600
900
NOTES:
1. The above referred design codes are for guideline purposes only. Other sizes, configurations, and pressure ratings are available to meet most applications.
2. Equipment is designed/certified to API 6A PSL 3 PR-2, NACE MR0175, DNV 2.7-1, 2.7-3, CE/PED, NORSOK standards as applicable and documented on the individual Equipment Specification Data Sheets (ESDS).
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