Bi-Plane Valve

Type:

●The main valve is a multi-leaf type with a counterweight configuration and hydraulic servo actuator
   operation mechanism.

●Composed of the valve body, valve disc, trunnion shaft, bearings, water seals, and other auxiliary
   operating components.

Materials:

●Valve Body: Flanged connection, fabricated from welded steel plates, including valve disc trunnion
    bearings, support base, stainless steel water seal seat plate, and mechanical position indicator.

●Valve Disc: Multi-leaf welded steel structure, precision machined for high sealing accuracy with
    the valve body; designed eccentrically to reduce head loss when fully open.

●Trunnion Shaft: Made of stainless steel with chrome-plated surface; features replaceable water
    seal rings to enhance leak prevention.

●Water Seal: Made of rubber, replaceable without dismantling the main valve; ensures tight sealing
    between the valve body and disc when fully closed.

Operating Conditions:

●The main valve normally remains fully open; during maintenance of the unit or downstream pressure
    pipeline, it should be closed only when upstream and downstream pressures are balanced.

●When opening the main valve, ensure that water pressures on both upstream and downstream
    sides are balanced.

●Under normal conditions, the main valve stays fully open; in emergencies, the valve can close
    rapidly using the counterweight configuration after the guide vanes are closed.