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
 |
Flange Globe Valve | Description of Flange Globe Valve: ZECO forged globe valvescan be divided according to the location of the stem thread. Flange globe stop valveste... |
 |
Air 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... |
 |
Swing Check Valve | What is a Swing Check Valve? A Swing Check Valve is desinged to prevent the medium in the pipeline from flowing back. As pressure reaches zero, th... |
 |
Anti Water Hammer 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... |
|
|
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, an... |
Same products
 |
Dry Ash Gate Valve | 卖方: China Valve Industry Co., Ltd. | The dry ash gate valve is designed for both inlet and outlet pipelines. It features... |
 |
China factory High temperature double head bolt 2""-8UN Steam Turbine RSV N for power station | 卖方: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "China factory High temperature double head bolt 2""-8UN Steam Turbine RSV N for power stationOur... |
 |
Male Thread Nickel Plated Brass Butterfly Ball Valve | 卖方: Zhejiang Huibo Valve Technology Co., Ltd. | Male Thread Nickel Plated Brass Butterfly Ball Valve Material: Brass Body, Brass Bonnet, brass ba... |
 |
4800030000 For daewoo,evobus,mercedes-benz,paccar foot brake valve | 卖方: Zhuji Oubote Auto Parts Co., Ltd. | 4800030000 foot brake valve are attached to the brake pedal. This isthe valve that actually start... |
 |
Aluminum Gas Valve | 卖方: Dong Guan ABYDA Gas Valve Co., Ltd | Product Specification:1. Raw Material: Al Alloy + solid brass + Mild steel;2. Applicable for LPG,... |
