GB/T597-1983 Marine Bronze Male Thread Check Valve
CB/T3819-1999 Marine Single Disc Check Valve
CB/T3478-1992 Marine Flanged Suction Check Valve
CB/T310-1999 Marine Bronze Female Thread Check Valve
CB300-1977 Marine Rubber Tube Bronze or Brass Check Valve
GB/T1952-1950 Marine Bronze Low Pressure Thread Check Valve
CB/T3944-2002 Marine Stainless Steel Flanged Check Valve
GB/T592-1993 Marine Cast Iron Flanged Check Valve
GB/T589-1993 Marine Bronze Flanged Check Valve
GB/T586-1999 Marine Cast Steel Flanged Check Valve
