Split Case Pump,Horizontal Split Case Pump,Vertical Split Case Pump,Double Suction Split Case Pump Zhengzhou Shenlong Pump Industry CO.,Ltd , http://www.waterpump-manufacturer.com
First, the multi-functional pump control valve Introduction JD745X series of multi-function pump control valve is a new type of automatic operation of the whole process of hydraulic valves to fully automatic centrifugal pump to open the pump when the slow open, Slow closing to prevent media backflow in the pipe, the valve can simultaneously replace the pump outlet pipe on the operation of the valve, two-speed valve, slow closing valve check valve water hammer eliminator. Second, the design of several major features 1. The main valve plate and the stem to form a sliding fit, the valve plate opening can change with the size of the flow, which can be closed at close to zero flow, to eliminate the most ideal state of water hammer. 2. The control chamber diaphragm design, to avoid the existence of piston-cylinder control chamber due to the switch and the failure of the phenomenon. At the same time reduce the pressure on the action, the diaphragm material first reinforced nylon fiber reinforced neoprene, action life of up to 650,000 times. 3. The swing check valve reduces the electricity consumption by 31%, the design reduces the weight of the main valve plate, adopts the sleek and spacious seat design, the drag coefficient is 3.8 and the swing check valve is much lower than the drag coefficient of 5.6. 4. Easy maintenance, using a wide bonnet, without removing the connection flange, you can remove all components within the valve. Third, the operating data Pump Type 8Sh a motor 90KW Rated speed 2950r / min Head 83m Flow 224m3 / h Test conditions: 1. Control valve automatically open time 30 to 40 seconds, automatic shutdown time of 10-15 seconds. 2. After the pump valve reaches the maximum opening in 2min. Fourth, the use of effect Our water division in October 2000 to use the normal operation of the product for 5 months, accumulated more than 2000 hours without any failure, showing that the valve operating conditions are very stable. 1. To meet the centrifugal pump start-up requirements, to ensure that the pump motor light-load start, without electrical and hydraulic pressure, can be achieved directly on the pump start-stop control, not only completely resolved due to sudden power outages caused by the pipeline medium on the pumping Water hammer impact generated by the system, medium reflux, but also greatly reduce the labor intensity of workers. 2. To eliminate the ideal effect of water hammer, stop the pump off the valve when a smooth silence, vibration, close the valve tight, because this versatile pump control valve relies entirely on hydraulic self-control, so no special management.