A valve with a bellows to seal off the stem enclosure is an ideal choice whenever leakage to the atmosphere is intolerable due to toxicity, chemical corrosion, radioactivity, other health or ecological reasons. In addition, seal welding the body-bonnet seal makes the valve hermetically sealed. The bellows is welded to the stem and to the bottom of the bonnet.
Supplier: Saitai Valve, China
Manufacturer: Shop in Shanghai Qingpu Industrial Park
Bellows Seal Products acc. to DIN
Bellows Seal Products acc. to ANSI