Home
1
Products
2
Bolted bonnet bellows seal globe valves3
https://www.afc-valve.com.tw/en/ Auto Flow Control Co., Ltd.
Products
Home Products Velan Gate, globe, and check valves Bolted bonnet high pressure valves (large forged) valves Bolted bonnet bellows seal globe valves
50

Bolted bonnet bellows seal globe valves

Size range(s)
NPS 2 1/2 - 10
(DN 65 - 250)
Pressure rating
ASME Class 600 - 1500
Standard connections
Butt weld

Features and benefits

  • Long cycle life bellows (3000 cycles) in Gr.321 (stainless) or Inconel.  Designed and successfully tested in high pressure/temperature conditions.
  • Two-part bellows.
  • Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
  • Low torque due to: a) Non-rotating stem nut thrust bearings; c) Central lubrication.
  • Bellows monitoring port (optional): A plug can be connected to the space above the bellows to monitor performance.
  • Forged for higher safety: Increased toughness, strength and fatigue resistance.
  • Guided disc: Seat and disc hardfaced with CoCr alloy, ground and lapped.
 1636236