流动介质
water,gas,oil and base
Standard or Nonstandard
Standard
Product name
wafer butterflr valve
Stem
stainless steel or carbon steel
Seat
NR,Hypalon,EPDM,NBR,fluororubber,PTFE,ect
Disc
Stainless Stee,titanium,plated ductile iron
Body material
Cast iron,Ductile iron,Aluminum bronze,Stainless steel,Carbon steel