1, to eliminate water hammer characteristics of the valve. From the principle of generation of the destructive water hammer, reduce the water hammer pressure mainly has two factors: before has just been cut off the water flow velocity v as small as possible ( Close to zero) When close the main valve plate. Multifunctional water pump control valve opening the main valve plate is determined by the impact of water size. High velocity when the main valve plate opening: reduced velocity of valve plate opening: small flow rate close to zero, the main Industrial Valves plate closed. The whole process to eliminate water hammer principle of quick closing is consistent, so to eliminate water hammer effect is very good. Water pump control valve delay the closing of the valve plate closed, must be inferior vena behind the formation pressure on diaphragm controller can realize, that is the main valve plate is turned off, slowly closing valve plate can be shut down, it is impossible to produce slowly-closing synchronization with quick closing phenomenon. 2, the design of the diaphragm. Diaphragm is a direct impact on the quality of the valve use effect and service life of key components, through a variety of screen, choose the neoprene as raw materials, intermediate with nylon netting to strengthen; Is made by authorization of the rubber quality of hunan province standing test, fatigue bending 650000 times without break, can be used more than 10 years. 3 and resistance characteristic of the valve. In order to reduce the flow resistance, reduce the weight of the main valve plate, in the design of using the streamlined spacious body design at the same time. Eight, and swing check valve with specification pipe resistance coefficient value is 5. 5. 4, connecting pipe parts design. Multifunctional water pump control Industrial Valves's role is to ensure that the valve open time is greater than the motor start-up time, make the light load motor startup; At the same time avoid caused by open valve too fast and pump water hammer. Open valve time is set by control valves according to the pressure working conditions on site. Control valve can be adjusted in and out of the diaphragm on the controller of flow velocity in inferior vena to adjust slowly-closing time; Closing can overhaul diaphragm controller; During normal operation of the pump can also be manually operate the valve to open/close the Industrial Valves. The filters are guarantee the purity of the water in the inferior vena diaphragm controller. The valve in an open process is reciprocating in and out of the water, itself has the effect of backwash, and thus can be used for medium to poor working conditions.
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resilient gate valve flow control valve with resilient seal gate valve are used extensively in cast iron gate valve.