For butterfly valve
100% PTFE valve cover for butterfly valve. Suitable for all chemicals: hydrochloric acid, caustic soda (sodium hydroxide), fluoride, oleum and other aggressive chemicals.
Valve cover for butterfly valve in 100% PTFE with central transparent band. For all chemicals, aggressive too: hydrochloric acid, caustic soda, fluoride, oleum, acids.
Valve cover for butterfly valve made with porous glass fabric has central transparent band and is suitable for the most part of chemicals. Not compatible with caustic soda.