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Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level surface safety valve manufacturers and suppliers, with professional factory, we are able to produce API and oilfield well surface testing SSV, welcome to contact us.

The Surface safety valve unit is a failsafe-closed hydraulic actuated gate valve used  for well testing on offshore and land operations. The surface safety valve is located upstream of the choke manifold and when activated prevents the backflow of well effluent int he event of flow-line rupture between the surface test tree and the choke manifold

Failure of the energy source or any component must cause the system to shut in the well at one or more points.The surface safety valves are operated by Emergency shutdown-ESD system, which allows remote activation of the valve at several strategically located stations throughout the rig-site and well test process areas. 

Specification of the SSV-Surface safety valve

Working pressure	35Mpa/70Mpa/105Mpa
Working Temperature range	-20oF~250oF
Inside Diameter	52/65/78/103mm
Service	H2S
Standard	NACE MR-0175   API 6A
Connections	Union