Trunnion ball valves are low emission capable due to the O-ring design; All O-rings are of AED (anti-explosive decompression) design. Standard ball in either full stainless steel or 3 mil high phosphorus electroless nickel plated for superior corrosion protection. Main features: 1. Hollow/solid ball, 2. Anti-fire safe design, 3. Anti-static device, 4. Free leakage of body Sealed construction, 5. Low torque in operation, 6. Double block & bleed (DBB), 7. Emergency sealing, 8. Extension stem at your choice, 9. Automatic body cavity relief, 10. Various driving types: gear, lever, electric, hydraulic, pneumatic, gas over oil. Material Specifications Body/Cap: WCB, LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A Ball: A105+ENP, LF2+ENP, A182 F304, A182 F316, A182 F304L, A182 F316L, A182 F6a, F51 Stem/Trunnion: A105+ENP, A350 LF2+ENP, A182 F304, A182 F316, A182 F304L, A182 F316L, A182 F6a, F51 Seat Retainer: A105+ENP, A350 LF2+ENP, A182 F304, A182 F316, A182 F304L, A182 F316L, A182 F6a, F51 Seal ring: PTFE / RPTFE / NYLON / VITON / PEEK / metal to metal