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 backflow preventer 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.
When the contractor pumps the drinking water into the geothermal heat pipe, a small amount of ethylene glycol flows back into the drinking water under pressure. The university then issued a notice to ensure the safety of drinking water in the future, staff in the HVAC system pipes installed double check backflow preventer.
Our company has backflow preventer for sale!
ZECOis one of the most professionalchina check valve manufacturers, and we have been devoted to produce china control valvefor 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
 |
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... |
 |
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... |
 |
Combined Butterfly-Check Valve | Basic informationThis valve acts as a closed circuit valve and a check valve to protect the system by avoiding and reducing the backflow of the int... |
 |
Wedge Gate Valve | Description Wedge gate valve is a linear motion, multi-turn general service valve. Table of Contents Gate valve Types as per Type of Closing E... |
|
|
Clean Water Air Release Valve | Basic informationThis is installed at the highest point of the pipe or where there is a closed air, which is used to discharge the gas in the pipe ... |
Same products
 |
Belaz Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Belaz Dump Truck Parts Spare Parts-China Manufacturer and Supplier XTME offers a comprehens... |
 |
Komatsu Dump Truck Parts | 卖方: XINGTAI ME MINING EQUIPMENT CO.,LTD. | Komatsu Dump Truck Parts -China Manufacturer and Supplier 100% OEM-Compatible Spare Parts-K... |
 |
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... |
 |
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... |
 |
Ball Valve | 卖方: Yuanda Valve Group Co.,Ltd. | Ball Valve Yuanda offers Cast Iron Ball Valves JIS 10K that are essential components for flu... |
