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 and water equipment suppliers. The problem of backflow water may occur in every place where water is used. We can learn about the harm caused by backflow water from the following two specific cases: A serious backflow problem occurred in Allegheny County, Pittsburgh, Pennsylvania.
A pest control company contaminated the water supply when it used the insecticide to kill termites. The company USES water from garden pipes to mix chlordane and heptachlor in tanker trucks. The end of the hose is immersed in the chemicals, while water pipes in the area are draining.When the plumber inserted the pipe into thegate valve, the water began to flow out because the discharge point was downstream of the tank car and there was no water installed, which caused the siphon phenomenon, causing the chemicals to be sucked out of the tank car and into the water supply system; The drinking water of a primary school in bowling green, Kentucky, was contaminated with ethylene glycol, a chemical used in an HVAC system, due to the lack of a backflow preventer valve.
在线联系供应商
Other supplier products
 |
Forged Steel Valve | ZECO forged steel gate valve chinarefers to the blank of valve, which is a forging piece with certain mechanical properties, shape and size produce... |
 |
4 Inch Butterfly Valve | Description of 4 Inch Butterfly Valve: ZECO 4 inch flanged gate valveis made of body, disc, stem, seat, stuffing box, gear etc. ZECO butterfly val... |
 |
Resilient Gate Valve for Underground 1025 | 6 inch water valveis commonly used with flanged gate valves and various upper valves for water, including dirt separator.Features of ZECO collector... |
 |
Top Entry Ball Valve | Description Due to the distinctive nature of the environmental conditions and operating conditions of the process, a typical ball valve is not suf... |
 |
3 Inch Butterfly Valve | Description of butterfly valve 3 inch: ZECO 3 inch butterfly valve is a small diameter butterfly valve, usually manually operated, and the connect... |
Same products
 |
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... |
 |
Gate Valve Vs. Ball Valve | 卖方: Yuanda Valve Group Co.,Ltd. | Gate Valve Vs. Ball Valve Gate valves and ball valves are both types of valves that are used... |
 |
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... |
 |
Common Types Of Check Valves | 卖方: Yuanda Valve Group Co.,Ltd. | Common Types Of Check Valves A is a valve whose switching parts are disc-shaped and rely on ... |
 |
Brass ball valve | 卖方: Yuanda Valve Group Co.,Ltd. | Brass ball valve Brass ball valve Applications: Water Supply: Commonly used in residentia... |
