Model: 2" to 48" Full Port Trunnion Ball Valve
GENERAL FEATURES
- 3 piece bolted body design for ease of field service and maintenance
- Forged body, bonnet and ball material as a standard, ensures a high integrity material grain structure
- Body joint integrity is ensured by dual independent seals supported by tight toleranced overlapping metal to metal joint construction capable of withstanding pipeline stress
- Valves are double block and bleed
- Valves are antistatic tested
- Valves are fire safe tested and verified by reputable third party
- Valves have safe relieving manual bleed valve
- Valves have drain/flush plug
- All trunnion valves are equipped with a locking device. For gear operated valves, this feature is included on the gear operator
- All trunnion valves have ISO 5211 mounting flanges for ease of mounting actuators
- Valve compliance with low emission standards
- Standard document package ISO / EN 10104.3.1
STEM DESIGN FEATURES
- Valves have anti blowout (blow-out proof) stem
- Stems and trunnions are manufactured separately from the ball and supported by bearing and RPTFE thrust washer to ensure low consistent torques
- Multiple independent stem packing seal systems ensures stem seal integrity
- All valves include emergency secondary stem sealant injection system
SEAT DESIGN FEATURES
- Valves have internal automatic self-relieving cavity (DPE designs are available on request)
- Special high volume seat insert design facilitate the selection of a broader range of materials while providing an increased life in difficult service conditions
- Seat ring sealing includes separate graphite seals for maximum assurance in fire conditions.
- All valves size 6″ and larger (smaller sizes on special request where possible) include emergency secondary seat sealant injection system
- A separate independent check valve is beneath the seat sealant injection fittings. Our valves are hydrotested utilizing the check valve only
- Should an injection fitting be damaged, it may be replaced without the requirement of re-hydrotesting the valve
OPTIONAL FEATURES
- Double piston effect seats
- Combination seats (double piston effect on one side and a self-relieving seat on the other)
- Body may be coated for corrosion protection
