Material: body, butterfly plate: Q235A

Valve shaft: 2Cr13

Working sealing surface: 1Cr18Ni9Ti (body) EPDM (butterfly plate)

Maintenance sealing surface: 1Cr18Ni9Ti (body, butterfly plate)

Sealing performance:

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.