dub-uhl chek vay-vuhl
Double Check Valve, Noun
A type of backflow prevention system used in plumbing.
Example usage: 'We need to install a double check valve to prevent water contamination.'
Most used in: Plumbing applications in residential and commercial buildings.
Most used by: Plumbers, pipefitters, and other tradespeople.
Popularity: 8/10
Comedy Value: 2/10
Also see: Double Regulating Valve, Dual Check Valve, Twin Check Valve, Back Check Valve,
What is a Double Check Valve?
A double check valve is a plumbing device used in water lines to prevent backflow of water. It is designed to prevent water from flowing back into the main water supply line after it has been used. The double check valve consists of two independently operated check valves in one unit, allowing water to flow in one direction only. It is commonly used in commercial and residential buildings to protect against backflow caused by pressure and temperature changes in the water line.
Double check valves are designed to be tamper-resistant, meaning they can withstand the force of someone trying to open them. This ensures the valve will remain closed and prevent water from flowing back into the main water supply line. Additionally, double check valves are designed to be resistant to corrosion and wear, making them a reliable and durable option for plumbing systems.
According to the U.S. Department of Energy, double check valves are required in all water systems in the United States. This is due to their ability to protect against backflow and contamination of drinking water. In addition, the U.S. Environmental Protection Agency recommends the use of double check valves to protect public water supplies from contamination.
Double check valves are an important part of the plumbing system in both commercial and residential buildings, ensuring that water flows in the right direction and protecting against backflow and contamination. They are an essential device for any plumbing system and should be installed and maintained by a qualified plumber.
The Origin of the Term 'Double Check Valve'
The term 'double check valve' first appeared in plumber construction around the late 19th century. It is believed to have originated around the early 1880s in the United States. The double check valve is a type of plumbing valve that is used to prevent backflow of water from a higher pressure source into a lower pressure system.
The double check valve was first patented by a plumber named William A. Smith in 1884. This patent describes a 'double check valve' that is similar to the modern valves used in plumbing today. The original patent described a valve with two check valves in series, which is the same design that is used today.
The double check valve is a vital part of any plumbing system, as it ensures that water flows in the correct direction and prevents contamination from entering the water supply. The double check valve is a simple but effective way to ensure that water is safe and uncontaminated. It is still used in many plumbing systems today, and it is an important part of any plumber's toolkit.
