Hot Sale China Spring Return Flapper Type Inline Dual Plate Stop Air Brass Wafer Style Check Valve 1 2 Inch
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Nominal Diameter ：DN50-DN600
Nominal Pressure(Pressure Rating)：PN10/PN16
Type Of Connection：Flange
Body:Cast iron or Ductile iron
Bonnet:Cast iron or Ductile iron
Disc:Cast iron/Ductile iron with NBR or EPDM