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!

Другие товары поставщика

	Floating Ball Valve	Description of Floating Ball Valve: ZECO floating ball valve chinahas two seats supporting the ball Under medium pressure, the ball can be pressed...
	Cast Steel Gate Valve	Description of Cast Steel Gate Valve:ZECO cast steel gate valve is in controlled under the quality assurance system of production and manufacturing...
	Pressure Relief(Sustaining) Valve	Basic informationThis sustaining valveis opened to prevent the pipeline and equipment from being damaged due to overpressure when the pressure in t...
	Electric Gate Valve	Description of Electric Gate Valve: ZECO electric gate valve is a gate valve controlled by an electric actuator. It can operate the gate valve remo...
	Bronze Flow Balancing Valve	Basic information Venturi flowmeter is adopted in the body of a balanced valve with threaded connections to make flow adjustment more accurate and ...

Похожие товары

	Dry Ash Gate Valve	Продавец: 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	Продавец: 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	Продавец: 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	Продавец: 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	Продавец: Dong Guan ABYDA Gas Valve Co., Ltd	Product Specification:1. Raw Material: Al Alloy + solid brass + Mild steel;2. Applicable for LPG,...