Specifications:

1.Size: 1/2''~2'' (DN15~DN50)
2.Full Port
3.Working Pressure:150LB~1500LB
4. Connection Ends:RF,FF,RTJ,Butt Welded 
5.Working Temperature: -29~425 ºC, or accordingly to customer requirements for different industries.
6.Suitable Medium:Water,Oil,Natural Gas and some corrosive liquids 
7.Operation:Handwheel
8.Inspection & Test:API598

Features:

● Long cycle life bellows (2000 cycles) in Gr. 321 (stainless) or Inconel. Designed and successfully tested in high pressure/temperature conditions.
● Bellows monitoring port (optional): Connected to the space above the bellows to monitor performance.
● Non-rotating stem prevents torsion of bellows.
● Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
● Forged for higher safety: Increased toughness, strength and fatigue resistance.
● Two-part bellows.
● Low torque due to: a) Non-rotating stem prevents torsion of bellows; b) Stem nut thrust bearings; c) Central lubrication.
● Seating faces hardfaced with CoCr alloy, ground and lapped