a profile, multifunctional pump control valve, multifunctional pump control valve is a kind of the whole process of automatic operation of the new type hydraulic valve. It can be opened slowly open centrifugal pump, stops close two levels of fast and slow close, to prevent the reverse piping within the medium. The valve can replace the operation valve in the pump discharge pipe at the same time, double speed valve, slow close check valve water hammer eliminator. 2. Design a few characteristics of 1. The main valve plate form sliding fit with the valve stem, valve plate opening changes over flow, make it close to zero flow closed, ideal to eliminate water hammer. 2. Control room a diaphragm design, to avoid the piston cylinder control room resistance caused by the switch failure. At the same time reduces the action pressure. By nylon netting enhanced neoprene to enhanced diaphragm material, its service life can reach 650000 times. 3. Compared with the swing check valve, power consumption was reduced by 31%. Designed to reduce the weight of the main valve plate. With streamlined and more spacious seat design. Drag coefficient is 3. 8, is far lower than the drag coefficient is 5. The 6 swing check valves. 4. Easy maintenance, wide cover, do not need to remove the connecting flange, to remove all parts in the valve. 3, 8 sh - run data 6 a type 90 kw pump motor rated speed 2950 r/min lift 83 m flow rate of 224 m3 / h test: 1. Time is 30 - control valve automatically open Time for 10 to 40 seconds, automatically shut down For 15 seconds. 2. Two minutes after the start the pump, valve reaches its maximum opening. Fourth, use effect 1. To meet the requirements of centrifugal pump shutdown and startup, can ensure the pump motor start under light load, no electricity, no oil pressure. Can be directly start-stop control pump. It not only solved the sudden power failure caused by water hammer shock and medium return, and greatly reduces the labor intensity of workers. 2. To eliminate water hammer effect is ideal. When the pump stop valve smooth, quiet, vibration, close the valve closed. Because the control valve depend entirely on the hydraulic automatic control, no special management.

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