ANSI Bellow Valve

Bellows Seal Globe Valve

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.

Features of bellows seal valves:

●Double wall bellows seal as standard.       
●Plug with marginal seat
●Bellows seal welded to bonnet            
●Welded seat
● Bellows seal 10,000 load cycles        
● External stem thread
●Secondary sealing: graphite+bellows sealing   
● Stem back seal
● Yoke gasket, double chambered            
● Stem with roll hardened thread


Technical specification

Design standard: DIN 3356

Face to face dimension: DIN 3202

Flange ends: DIN 2543-2545

Test & inspection: DIN 3230


1.Bellow seal element. The key part of bellow sealed globe valves is metal bellow. It is the connection between cover and stem with automatic roll welding. The metal bellow can keep the stem part no leakage.

2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life.

3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.

4.Grease nipple. It can direct lubricate the stem, nut and sleeve.

5.Ergonomic hand wheel. It provide longer service life and easier operation.

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