in the composite exhaust valve work, for the sake of safety, generally set starting loading device, so if you don't have what results will lead to?

1。 Any type of composite exhaust valve must have a waterproof hammer shut down function. For unpowered composite exhaust valve, common problem is when the pump stop pump, because the initial shut off torque is less than the static friction torque of the Industrial Valves shaft butterfly plate will not immediately respond, the cut-off until a large number of medium return, at this time effect on the butterfly plate V shutoff valve shaft torque is big enough to overcome the valve spindle static friction torque, butterfly plate will start the Industrial Valves movement. At this point, the closing of the pump is temporary. Workspace often enter the turbine workspace, changes the original characteristic of the cut-off Industrial Valves, don't meet the requirements of water hammer. Especially in the case, if the buffering mechanism failure, the butterfly plate quickly closed, and cut off water, fluid motions suddenly blocked, its huge kinetic energy will be transformed into potential energy, to produce water hammer pressure rise.

2。 Accidents when the pump is stopped, composite exhaust valve lose & other; Check & throughout; Back function, a large number of medium flow back, cause the pump. When the pump's speed is greater than the allowed reverse rotation speed, pump impeller and motor rotor of the centrifugal force will exceed the permitted mechanical strength, so as to endanger the safety of the pumping station.

all in all, composite exhaust valve set starting loading device is very important.

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