.

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.



Отправить запрос, связаться с поставщиком

Кому: ZhengFeng Valve Group
Ваш E-mail:
Текст письма:


Send to other suppliers

Другие товары поставщика

Dirt Separator
Dirt Separator Basic informationThis valve is used for water purification.Features1. Easy to operate;2. No water stop is required to clean the cavity body;3. Dirt...
3 Inch Butterfly Valve
3 Inch Butterfly Valve Description of 3 Inch flanged Butterfly Valve: ZECO 3 butterfly valveis a small diameter butterfly valve, usually manually operated, and the connec...
Backflow Preventers
Backflow Preventers The double plateChina wafer check valveis used for the pure pipeline, industry, environmental protection, water treatment, high-rise building water...
Gate Valve
Gate Valve The resilient seatedgate valveof ZhengFeng is widely used and reliable in the water supply and drainage system of water supply company, sewage comp...
Gate Valve
Gate Valve ZECO is one of the professional gate valve manufacturers, specializing in the production of wedge gate valve and through conduit gate valve product...
Все товары поставщика

Похожие товары

Ductile Iron Check Valve
Ductile Iron Check Valve Продавец: Tianjin KXC Metal Products Co., Ltd Small in size, light in weight, compact in structure and easy in maintenance. Two torsion sprin...
Flanged WCB Ball Valve
Flanged WCB Ball Valve Продавец: Tianjin KXC Metal Products Co., Ltd is a shut off valve that controls the flow of a liquid or gas by means of a rotary ball having a...
Bellows Globe Valve
Bellows Globe Valve Продавец: Tianjin KXC Metal Products Co., Ltd has a compact structure and is one kind of control valve to balance the pressure. Bellows are us...
PVDF Swing Type Wafer Check Valve
PVDF Swing Type Wafer Check Valve Продавец: Kaixin Pipeline Technologies Co.,Ltd PVDF Swing Type Non Return Wafer Check Valve DN15-DN300 Plastic Check Valves For Industry And San...
Manual Flow Balancing Valve
Manual Flow Balancing Valve Продавец: ZhengFeng Valve Group Basic information of Manual Flow Balancing Valve This valve can adjust the flow easily and accura...