Successfully completed the PR2 Performance Verification Test of API 6A Appendix F and API 17D 2nd Edition. Testing included a 1200 cycle endurance test at full differential design pressure.
Dual stem seal arrangement. The primary gland is a unique Moly filled PTFE multi-ring chevron style gland incorporating two spring energised ‘U’ cup seals. The secondary gland is a spring energised, Moly filled ‘U’ cup seal. Both seals were tested independently during qualification.
Stem has fully functional Metal-to-Metal back seat when valve is in the fully closed position.
Metal-to-Metal seal between Seat to Gate, Seat to Body and Body to Bonnet.
By design, the drive train failure point is external of valve.
Position indication system provides anchorage for indicator plate or for push-pull type indication system.
Drive train safety factor when compared to Nominal operating torque is well in excess of 5 to 1.
Unique sprung non-elastomeric seal behind seat provides low pressure sealing and protects the valve cavity from debris.
Slab Gate design offers uninterrupted flow passage through valve bore.
Standard material certification for pressure retaining and controlling parts are to API 6A PSL3 and BS EN 10204 3.1 (3.2 option available).