... /SS/WCB/DI Seat:EPDM/NBR Actuator:lever Name:Soft Sealing Midline butterfly valveType:D81XP-10Size:1 1/2-48 ... steel,aluminium alloyPlate Material:iron nylon cladding,ductile iron ptfe cladding,ductile iron,aluminium bronze plating,stainless steel,carbon ... chemical and physical properties, high-performance , ptfe ,etc. Accordingly improve the product's sealing and also increase application scope. As ...