Sub Surface Safety Valve
Sub Surface Safety Valve (Tubing Retrievable)
The tubing retrievable, surface controlled, sub surface safety valve
featured rod piston actuation; metal to metal seal body joints;
a rugged flapper-closure mechanism and a minimum number of
critical, static and dynamic seals to ensure maximum reliability.
These valves use a single rod piston with spring energized, filled
Teflon sealing elements; a static, full-closed. Metal to metal seal;
and a static, fully open seal and centralizing system. The flapper
mechanism also has full metal-to-metal sealing plus a secondary
soft seat, and it meets a leakage-acceptance criterion seat is
substantially more stringent than API and ISO specification.