Backflow Preventers(Low Pressure)
Basic informationThis valve can strictly prevent the occurrence of backflow pollution, is a safe device to ensure the hygiene of drinking water.
Features1. More superior streamline design, energy - saving effect；2. Discharge control device and outlet are designed without obstacles to reduce fluid resistance；3. More sensitive check effect, low opening pressure；4. The top is provided with a lifting ring for easy installation.Principle
When the inlet pressure is lower than the outlet pressure, the valve closes and the drain valve opens automatically, and it is always in the open state. The middle chamber is the same as the atmosphere, realizing air partition, and the partition performance is safe and reliable. When the water supply stops, the sealing force of the first and second
check valvedisc will increase automatically, effectively improving the sealing reliability.Installation and CommissioningButterfly orgate valvesshould be installed on both sides of the . Filters should be installed at the inlet and expansion or soft joint should be installed at the outlet. The discharge outlet of the drainer shall be additionally installed with the outlet pipe, which shall be downward directed to a place greater than or equal to 100mm above the intake port of the collector well. No valves shall be allowed in the middle. For specific use, please consult ZhengFeng Valve Group.
在线联系供应商
Other supplier products
 |
Concentric Butterfly Valve | The concentric butterfly valve is characterized by the stem center, disc center and body center in the same position. Such structures are simple to... |
|
|
Adjustable Dynamic Flow Balancing Valve | Basic information This valve can manually adjust the set flow rate in the pipeline, and also can automatically maintain the pressure difference bef... |
 |
Knife Gate Valve | Features of sewer knife gate valve Full bore design for high media throughput capacity; U-shaped gasket with good sealing effect; Gate pla... |
 |
Pneumatic Butterfly Valve | As one of the leadingchina ball valve suppliers, ZECO Valve Group developed our own laboratory for research &development for international stan... |
|
|
Backflow Preventers | The problem of contaminated water due to backflow is emerging, and the health hazards caused by contaminated water are also alarming to engineers a... |
Same products
 |
阀 | 卖方: 荣腾鑫诺（天津）国际贸易有限公司 | 液压阀 |
 |
Class 300 Valve | 卖方: GangYe Group Co.,Ltd. | Class 300 valves have a pressure rating of 300 pounds per square inch (psi) or 20.7 bar, allowing... |
 |
Class 3000 Industrial Valve | 卖方: GangYe Group Co.,Ltd. | Wafer Body, Full Port Design, Flanged End Class 3000 Ball Valve. A ball valve class 3000pressure-... |
 |
Class 2500 Industrial Valve | 卖方: GangYe Group Co.,Ltd. | Class 2500 valves can be used for both on-off and throttling applications. The specific valve typ... |
 |
Class 150 Valve | 卖方: GangYe Group Co.,Ltd. | globe valve class 150is a pressure rating designation defined by standards organizations, such as... |
