Wireline-retrievable subsurface safety valve
INCONEL is a registered trademark of Special Metals Corporation.
The valves are validated to API Spec 14A, but their performance exceeds the certification requirements.
Flapper leakage: API Spec 14A allows leakage up to 5 ft3/min. The acceptance criterion for Recovery safety valve flapper systems is 150 times more stringent.
Hydraulic actuator integrity: API Spec 14A allows up to 5% drop in applied hydraulic pressure; for 10,000-psi hydraulic pressure, the acceptable leakage is 500 psi. Recovery safety valve actuators allow <1% drop, as confirmed by rigorous tests.
Slam closure: The valve's flapper system has been successfully slam tested at high flow rates that exceed the Annex K requirements of API Spec 14A.