700X Pump Control Valve

1 Product Overview: Shanghai, Tianjin Shield 700X pump control valve from the main valve, solenoid pilot valves, needle valves, ball valves, check valves, limit switch, micro-shaped filter and pressure gauge hydraulic control over the system. Domestic manufacturers have famous Valve Co., Ltd. Shanghai Jin shield. When the pump needs to stop working, first turn off the main valve inlet pressure of 90%, the pump stops running. The remaining 10% off the backwater. Prevent water hammer phenomenon. The use of solenoid pilot valve control, no other devices and energy. Saving energy, maintenance is simple, smooth stop the pump. Widely used in high-rise buildings, living quarters and other water supply systems and urban water supply project. 2 Design choice points: (1) the application of engineering formula 700X Pump Control Valve is the result of factory inspection, a variety of logos complete technical documentation to meet the requirements. (2) According to the functional requirements, select the type of valve, according to pipeline medium, temperature, building standards and requirements for owners to determine the valve body and the sealing portion of the material. Commonly used body material cast iron, copper and iron, copper and plastics. Commonly used sealing surface and lining materials are copper alloys, plastics, steel, carbide, rubber. Body material should match the pipe material phase. (3) The valve has a medium 0.6,1.0,1.6,2.5 and nominal pressure 4.0MPa different levels, pipeline transportation, the working pressure should be less than the nominal value of the valve. (4) Project water control valve setting should have enough space for management, operation, installation and maintenance, and shall comply with the requirements of the pipeline valve. (5) when the pipe using flange connection flange connection should be used hydraulic control valve; when the pipeline is connected using the trench, the trench should be connected to the hydraulic control valve. (6) HC700X pump control valve should be set in the pipeline medium flow in one direction. (7) The pump control valve main direction of the arrow on the body must be consistent with the flow of the pipeline system. (8) connected to the hydraulic control valve pipe should not have gas block, vapor lock phenomenon. In the presence of the gas pipeline network segment location should be set up automatic exhaust valve. (9) valve horizontal installation, valve cover, stem should be facing up. When mounted vertically, bonnet, stem should be facing outward. (10) The strength and tightness test should be done before the valve is installed. How it works: When the water pump to the downstream water supply valve, solenoid pilot valve is fully open, transferred to the appropriate degree of opening of the needle valve upstream water through the needle valve, check valve into the main valve control room, the solenoid pilot valve flow out when the primary valve control room pressure to keep the main valve in the proper opening, maintaining normal water supply downstream. When the pump stops working, turn off the solenoid pilot valve, the main valve control room to stop the drainage, control room pressure increases, the main valve begins to close. Close to 90% when the main valve to stop the pump the upper limit switch output signal, the pump stops. At this point downstream backwater through the check valve into the main valve control room, control room pressure increases, the main valve is closed. The main technical parameters: Product Name: multifunctional pump control valve Product Category: hydraulic control valve series Model: 700X-16 Nominal pressure: 1.0-1.6Mpa Nominal Diameter: DN40-DN600 Applications: Clean water temperature: 0-80 degrees Flange Standard: GB / T17241.6GB / 9113 Test standard: GB / T13927 AP1598