Surface safety valve (SSV) is a hydraulically 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 choke manifold upstream in the event of overpressure, failure, a leak in downstream equipment, or any other well emergency requiring an immediate shut down.
 
SSV is remotely operated by an emergency shutdown device (ESD), which can be triggered automatically by high- or lowpressure 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 hammer union or API-6A flanges.

All SSVs are manufactured under Type Approval or Design Verification Review and provided with a Certificate of Conformity and full quality file.

Applications
Testing oil and gas wells with high flow rates, high wellhead pressures, or the presence of H2S.
Wells with hazard operational analysis showing a surface pressure barrier is needed in addition to the primary or master valve

Features
Fail-safe remote activation and automatic well closure when loss of control pressure occurs
Double metal-to-metal seals for reliability in harsh environments
Compliance with API-6A (PSL-2 or 3, PR2), NACE MR0175
Working Pressure: 5,000psi ~ 15,000psi
Temperature: P ~ U
Bore Size: all popular
Hydraulic actuator: 3,000 psi working pressure and 1/2" NPT
Inlet and outlet connections: API 6A flange or hammer union