Applicable medium: air, water, sewage, steam, gas, oil, etc.
Drive form: manual, worm and worm drive, air drive, electric drive.
Valve body: ductile iron, cast steel, alloy steel, stainless steel
Butterfly plate: cast steel, stainless steel and special materials
Sealing ring: all kinds of rubber, teflon
Stem :2Cr13, stainless steel
Packing: O-ring, flexible graphite O