SURFACE SAFETY VALVE (SSV)

The Surface Safety Valve (SSV) is device used to stop flow upstream the choke manifold in an emergency. It is located upstream the choke manifold in a well test equipment configuration.
The surface safety valve is operated by emergency shut down systems. The ESD system enables field operators to shut down the upstream flow at any of the ESD locations during a well test operation. Shutdown is achieved by transmitting pressure through hydraulic or pneumatic medium to the SSV. The actuator has a pressure-to-open configuration. The surface safety valve will close once pressure is bled off the actuator.
The SSV are built with supporting frame and pad eyes for ease of transportation to rig locations.

TECHNICAL SPECIFICATION

Working Pressure:                             10,000-psi
Working Temperature Range:          -20 degF to 250 degF
Type:                                                  Hydraulic
Internal Diameter:                             3-1/16 inches
Service:                                              Standard
Standard:                                            NACE MR0175
Code:                                                  API 6A
Connections:
            Inlet Union (Female)              3-inch x 1502
            Outlet Union (Male)              3-inch x 1502