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Introduction to the water control valve system (i) The new multifunctional pump control valve installed on the outlet pipe of the centrifugal pump also has three functions of gate valve, check valve and water hammer eliminator. Centrifugal pump is the most commonly used water supply and drainage pump, usually in order to ensure the normal operation of the pump, the pump outlet pipe according to the need to install a gate valve, check valve and water hammer eliminator three valve parts, the three The kinds of valves play different roles in the operation of the pump. Ii gate valve is usually closed, the valve starts slowly open the valve, the pump down, the gate valve slowly closed. Pump closed and closed parking brake, can effectively prevent the pump water hammer and pump stop water hammer at the same time, reduce the motor load when the pump starts, the pump at zero flow when the shaft power minimum, generally only the design axis 30% of power. (Iii) When the geometry of the pump is high, the severe water hammer momentarily high pressure will cause the pipeline to rupture and a serious production accident occurs. Water hammer to prevent the destruction of the water pipeline, often in the water pump pressure pipe to install water hammer eliminator.
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