Difference between "Hard back seat" and "Soft back seat" butterfly valve Sep 14, 2022 Industry news 182 Views Share: PREVIOUS:The difference between the ''Cartridge Sea'' and ''Booted Sea'' of Butterfly Valve NEXT:Working principle and characteristics of flanged three-way ball valve Related How to choose steam trap correctlyWhat is the purpose of stainless steel knife gate valves?The working principle and characteristics of flange forged steel ball valveWhat are the consequences of a wrong trap selection?What is the difference between single, double and triple eccentric butterfly val