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!
Send product request
Other supplier products
 |
Bronze Adjustable Dynamic Flow Balancing 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... |
 |
Wafer Check Valve | The double plateChina wafer check valveis used for the pure pipeline, industry, environmental protection, water treatment, high-rise building water... |
 |
4 Inch Gate Valve | Description of 4 Inch Gate Valve: ZECO 4 inch 4 inch flanged gate valveis one of the most commonly used calibers. Gate valve in the line just swit... |
 |
Stainless Steel Globe Valve | Description of Stainless Steel Globe Valve: The principle of ZECO stainless steel globe valve is that through the drive mechanism to make stem and ... |
 |
Strainer & Dirt Separator | Strainers, dirt separatorsand backflow preventers are designed to prevent impurities from entering the specified pipe section. Comparing these thre... |
Same products
 |
Corrosion-Resistant Pneumatic Insulated Ball Valve | Seller: 869388 | Zhejiang Wisley Automatic Valve Co., Ltd. specializes in manufacturing pneumatic valves and indus... |
 |
Precision Valve Manufacturing for Energy Infrastructure | Seller: Zhejiang Naishi Valve Co. | The Forged Steel Trunnion Mounted Ball Valve is designed for high-pressure pipeline applications ... |
 |
Greentech New Automatic No Cross Contamination Pneumatic Vacuum Conveyor Sugar Volumetric Rotary Feeder System Material Handling | Seller: Greentech International (Zhangqiu) Co., Ltd | Automatic Operation: Ensures continuous and efficient sugar feeding without manual intervention... |
 |
Greentech New Industrial Automatic Dilute Phase Pneumatic Conveying System Rotary Valve Roots Blower 220/380V Material Handling | Seller: Greentech International (Zhangqiu) Co., Ltd | Automatic Assembly: Simplifies manual processes with precision and efficiency. Positive Pressu... |
 |
RV-02 Pressure Relief Valve | Seller: Greentech Industry (Jinan) Co., Ltd | RV-02A pressure relief valveAir Blower pressure relief valve is installed on the inlet &outle... |
