Material: body, butterfly plate: Q235A
Valve shaft: 2Cr13
Working sealing surface: 1Cr18Ni9Ti (body) EPDM (butterfly plate)
Maintenance sealing surface: 1Cr18Ni9Ti (body, butterfly plate)
Working seal: GB/T13927 class a zero leakage
Maintenance seal: 1Cr18Ni9Ti (body, butterfly plate)
Service life: 15 years overhaul seal, the whole machine for 30 years
Uses: used for hydropower station, turbine inlet.
Structure: the butterfly plate sealing structure with different radius coaxial pair, hydraulic piston type mobile inspection seal structure, sealing force.
Features: advanced structure, flexible opening, good sealing performance, long life.
Main dimensions, dimensions and dimensions