API Bellows Seal Globe Valve is a compact structure that is a kind of control valve which uses bellows for sealing the valve stem components. The bellows valve has a bellow inside, and the lower end of the stainless-steel bellows is welded to the stem to prevent the system fluid from eroding the stem.


1.Double wall bellows seal as standard.
2.Plug with marginal seat
3.Bellows seal welded to bonnet
4.Welded seat
5. Bellows seal 10,000 load cycles
6.External stem thread
7.Secondary sealing: graphite+bellows sealing
8. Stem back seal
9. Yoke gasket, double chambered
10. Stem with roll hardened thread


Size range : 2”-16”
Class : 150LB -1500LB
Temperature : ≤425℃
Materials:WCB,WC6,WC9,C5,C12,CF8,CF8M,CF3M,SS321,904L etc.
Materials of bellows: SS304, SS316, SS316L,SS321,SS316Ti ,Hastelly C276
Application:Hot oil system, steam system, molten sale and hot and cold water system etc.
Actuation: can operate with lever, reducer, pneumatic or electric actuator with handwheel for emergencies
Medium: the valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.
Working temperature: from -196ºC (cryogenics service), -46ºC or -50ºC (stainless steel constructions) and -29ºC (carbon steel constructions) up to 220℃

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