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!
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
Adjustable Dynamic Flow Balancing Valve | Basic information Adjustable dynamic flow balancingvalve can manually adjust the set flow rate in the pipeline, and also can automatically maintain... |
 |
Motorized Ball Valve | As one of the china ball valve manufacturers, ZECO always adhere to exceed customer expectations,to provide customers with more international stand... |
 |
Motorized Butterfly Valve | As one of the leadingchina ball valve suppliers, ZECO Valve Group developed our own laboratory for research &development for international stan... |
 |
12 Inch Butterfly Valve | Description of 12 Inch ButterflyValve:Most of ZECO 12 inch butterfly valves operated by hand-wheel, wrench and handles, pay attention to the operat... |
 |
Resilient Gate Valve for Underground | Basic information Thisunderground butterfly valveis used as a two-way closed circuit device. Features 2. Does not affect the traffic, and undergro... |
Похожие товары
 |
Corrosion-Resistant Pneumatic Insulated Ball Valve | Продавец: 869388 | Zhejiang Wisley Automatic Valve Co., Ltd. specializes in manufacturing pneumatic valves and indus... |
 |
Precision Valve Manufacturing for Energy Infrastructure | Продавец: Zhejiang Naishi Valve Co. | The Forged Steel Trunnion Mounted Ball Valve is designed for high-pressure pipeline applications ... |
 |
Greentech New Automatic No Cross Contamination Pneumatic Vacuum Conveyor Sugar Volumetric Rotary Feeder System Material Handling | Продавец: Greentech International (Zhangqiu) Co., Ltd | Automatic Operation: Ensures continuous and efficient sugar feeding without manual intervention... |
 |
Greentech New Industrial Automatic Dilute Phase Pneumatic Conveying System Rotary Valve Roots Blower 220/380V Material Handling | Продавец: Greentech International (Zhangqiu) Co., Ltd | Automatic Assembly: Simplifies manual processes with precision and efficiency. Positive Pressu... |
 |
RV-02 Pressure Relief Valve | Продавец: Greentech Industry (Jinan) Co., Ltd | RV-02A pressure relief valveAir Blower pressure relief valve is installed on the inlet &outle... |
