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- Petrochemical industry
- Process engineering
- General industry
- Beverage industry and food industry
- Leak-free stem seal
- Primary sealing to atmosphere is provided by a multi-walled metal bellows welded to the stem and a graphite gasket between body and bonnet.
- Secondary sealing of the stem passage to atmosphere is provided by a minimum of five graphite packing rings plus lower gland section for added safety.