Features and benefits

• Long cycle life bellows (3000 cycles): Designed and qualification tested for high pressure/temperature service.
• Bellows monitoring port (optional): A plug can beconnected 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 CoCr alloy hardfaced and wedge is solid CoCr alloy.