Robust API 6A Seals for Subsea Gate Valves
Robust API 6A Gate Valve Seals employ duplex seats for redundancy. Floating gates track seat misalignment. Energizer O-rings preload metal contacts. Stem nut torque specs prevent packing over-tightening. Alloy 625 overlays for erosion protection. API 6A Annex H high-temp variants to 700°F. Acoustic emission monitoring detects seal micro-cracks. Superfinishing achieves 8 Ra seats. Portable valve test rigs verify field performance. Vital for SWD disposal wells under UIC regs.