Backflow Preventers
Basic informationThis valve is installed at the outlet of the water pump. It can prevent the backflow of the medium, linked with the water pump, and can effectively prevent the water hammer phenomenon.Features1. Slow closing effectively prevents water hammer.2. Stop pump stable and save energy3. Full port, small fluid resistance4. Completely Automatic OperationPrincipleWhen the pump is started, the solenoid pilot valve is fully opened after electrification, and adjust the needle valve to the appropriate opening degree, upstream water enters the main valve control room through the pipe and flows out through the solenoid pilot valve, at this point, the pressure of the main valve control room keeps the main valve open and at the appropriate opening degree to keep the normal water supply downstream. When the water pump stops working, the solenoid pilot valve closed after power is cut off, the main valve control room stops to drain, the pressure of the control room rise, the main valve begins to close. When close to 90% position, the upper routing switch of the main valve outputs the stop signal and the pump stops running. At this point, the downstream backwater enters the main valve control room through the pilot pipe, the pressure of the control room increases to close the main valve.Installation and CommissioningThe water pump control valveshall be installed at the outlet of the pump and shall be installed on the pipeline of the one-way flow of the medium. It does not need other devices and energy except using solenoid pilot valve control. For specific use, please consult ZECO Valve Group.Product scope, Standards & MaterialsSize Range: 2"~24"Pressure Rating: 10bar ~ 25barFace to Face Dimensions: AMSE B16.10, EN558-1Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2Coating: Fusion Bonded Epoxy CoatingInspection and Test: ISO 5208 / EN 12226-2
ZECOis one of the most professional china check valve manufacturers, and we have been devoted to produce valve chinafor many years. If you want to know more details or want a quotation, just feel free to contact us!
在线联系供应商
Other supplier products
 |
Backflow Preventers | The concentricbutterfly valveis characterized by the stem center, disc center and body center in the same position. Such structures are simple to m... |
 |
Differential Pressure Control Valve | Festures of dpcv valve Accurate and stable pressure difference control； 20-250Kpa Pressure difference control range; Simple debugging, without c... |
 |
Cast Steel Gate Valve | Description of Cast Steel Gate Valve: ZECO cast steel gate valve Chinais in controlled under the quality assurance system of production and manufa... |
 |
Metal Seated Butterfly Valve | As one of the china ball valve manufacturers, ZECO always adhere to exceed customer expectations,to provide customers with more international stand... |
 |
Bronze Adjustable Dynamic Flow Balancing Valve | ZECO is one of the leading check valve manufacturers china, China. ZECO check valveprovides non-slam closure, have a low head loss and close drip-t... |
Same products
 |
Belaz Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Belaz Dump Truck Parts Spare Parts-China Manufacturer and Supplier XTME offers a comprehens... |
 |
Komatsu Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Komatsu Dump Truck Parts -China Manufacturer and Supplier 100% OEM-Compatible Spare Parts-K... |
 |
China Gate valve | 卖方: Yuanda Valve Group Co.,Ltd. | China Gate valve China Gate valve A is a type of valve that uses a gate or wedge-shaped dis... |
 |
Non Return Valve Suppliers China | 卖方: Yuanda Valve Group Co.,Ltd. | Non Return Valve Suppliers China refers to the opening and closing member for the circular v... |
 |
Ball Valve | 卖方: Yuanda Valve Group Co.,Ltd. | Ball Valve Yuanda offers Cast Iron Ball Valves JIS 10K that are essential components for flu... |
