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There are 10 entries in the glossary.| Pages: 1 |
| Back Flow Preventer | A device to prevent water from traveling from one system back into any part of the main distribution system, usually by siphoning, esp. into a potable water supply. This is generally required for sprinkler systems, handheld showers, pullout faucet spouts, kitchen sprayers, etc. |
| Back Pressure | Pressure that resists the flow of fluid in a piping system. |
| Backwater Valve | Sewer line valve that prevents sewage from flowing back into the house. |
| Ball Check Valve | A valve that uses a ball to seal against a seat to stop flow in one direction. |
| Ballcock | The fill valve that controls the flow of water from the water supply line into a gravity-operated toilet tank. It is controlled by a float mechanism that floats in the tank water. When the toilet is flushed, the float drops and opens the ballcock, releasing water into the tank and/or bowl. As the water in the tank is restored, the float rises and shuts off the ballcock when the tank is full. |
| Basin Wrench | A wrench with a long handle with jaws mounted on a swivel that allows the jaws to reach and handle nuts to fasten faucets to a previously installed sink. |
| Blowbag | A drain-cleaning device consisting of a rubber bladder with a hose fitting on one end and a nozzle on the other. The device attaches to a water hose and is inserted into a clogged drainpipe. As water is introduced, it expands to grip the pipe, and releases pulsating bursts of water through the nozzle, forcing water through the pipe to clear the obstruction. |
| Branch | Any part of a drain system other than the main, riser, or stack. |
| Branch Vent | A vent connecting one or more individual vents with a vent stack. |
| BTU | British Thermal Unit - A unit of heat energy required to raise the temperature of 1 lb. of water 1 degree Fahrenheit. |
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