Extended body bellows seal gate valves
- Size range(s)
- NPS 1/2 - 2 (DN 15 - 50)
- Pressure rating
- ASME Classes
800 - 1500
- Standard connections
- Threaded, Socket weld
Features and benefits
● Long cycle life bellows (3000 cycles): Gr. 321 (stainless) for Class 800, Gr. 321 or Inconel for Class 1500, and Hastelloy C for chlorine service. Optional materials available on request. Designed and qualification-tested for high pressure/temperature service.
● Bellows monitoring port (optional): A plug can be connected with the space above the bellows to monitor performance.
● Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
● Superior seating faces: Seats hardfaced with CoCr alloy and wedge is solid CoCr alloy.