Surface Safety Valve (SSV) is a hydraulically actuated, fail-safe gate valve for producing or testing oil and gas wells with high flow rates, high pressures, or the presence of H2S. It is essentially a shutdown valve installed at the upper wellbore for emergency shutdown to protect the production tubings and wellhead in case of overpressure. Safety Valves are widely used in Wellhead Christmas Tree and Ground Choke Manifold. It can quickly shut down the well upstream in the event of overpressure, failure, fire, a leakage in downstream equipment, or any other well emergency requiring an immediate shut-down.
The pressure needed to keep the valve open can be provided with a simple hand pump which, in an emergency, is bled off on the rig floor. However, a more sophisticated system called an emergency shut down system(ESD) is recommended because it allows the actuator to be activated remotely.
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
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 |
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