Gate valve

Main parts materials:
Body and bonnet
Carbon iron: GG25
Ductile iron: GGG40, 50
Wedge: EPDM or NBR coated ductile iron
Stem: stainless seel or copper alloy
Standard: GB12232
Nominal pressure: PNO 6MPa
Nominal diameter: DN1000 to 2000mm
Leakage: GB/T 13927 class D
Driving type: motor, hydraulic