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Alpha Plumbing Home Page Water Heaters, Slab Leaks, Trenchless Sewer Replacement, Faucets Repaired and Installed, Toilets Repaired and Installed, Gas Leaks, Food Disposers Water Heaters/Boilers, Water Tempering, Backflow Devices, Service Agreements & PM’s, Trenchless Pipe Replacement, Faucets & Fixtures, Drain Stoppages, Water & Sewer Lines, Gas Lines, Grease & Other Interceptor Installation, Pump Repair & Installation Water Heaters/Boilers, Water Tempering, Backflow Devices, Service Agreements & PM’s, Trenchless Pipe Replacement, Faucets & Fixtures, Drain Stoppages, Water & Sewer Lines, Gas Lines, Grease & Other Interceptor Installation, Pump Repair & Installation Underground Utilities Repair and Installation Testing, Repair and Installation Water Leaks, Sewer Leaks, Gas Leaks, Video Inspections, Line Tracing, Pin Point Leak Locations, Sewer Odors Hydro-Jetting, Cabling, Maintenance Underground pipe replacement without digging a trench Jobsites of interest Contact Alpha Plumbing All about Alpha Plumbing Our site map for your convenience.




Glossary of Plumbing Terms



A B C D E F G H I J K L M N O P Q  R S T U V W X Y Z






WC Water Closet
WH White finish on faucets.
Wall Thickness The thickness of the tubing wall.
Wash-Down Water Closet Water closet having a siphon trapway at the front of the bowl, and integral flushing rim.
Waste Arm Drain An extension pipe, usually to extend a sink drain into a wall.
Waste & Overflow Drain An assembly for a bathtub. The outlet at the top removes the overflow water during tub filling and the drain at the bottom removes wastewater when the tub is drained.
Waste Plug Drain stopper on a bathtub drain
Waste Shoe Bathtub drain assembly.
Waste Stack See Soil Stack. The vertical main pipe in a drainage system, extending one or more stories.
Water Closet A toilet.
Water Hammer A loud banging noise caused by the hydraulic shock of suddenly shutting off a water supply, where water moves against the side of containing pipe or vessel.
Water Hammer Arrestor A device installed near a fixture to absorb the hydraulic shock caused by a sudden shutoff of water.
Water Horse Power (WHP) The calculated horse power produced by the pump using the formula WHP = head x gpm/3960.
Water Service Pipe The pipe from the water main or other sources of potable water supply to the water-distributing system of the building served.
Water Spot Water surface in the toilet bowl once the flush is completed.
Water Table Level below the earth's surface at which the ground becomes saturated with water.
Waterway Fitting A channel through which water can flow; connects water heater to inlet and outlet lines.
Wave Washer A washer, common in drain linkages, which provides pressure against a ball or other mechanism even when the opposing nut is not fully tightened.
Weak Well Weak well application occurs when the pump lowers the water level in the well faster than the well can replenish itself.
Weir A long notch with a horizontal edge, as in the top of a vertical plate or plank, through which water flows, used in measuring the quantity of flowing water.
Well Casing A steel or plastic pipe inserted into a drilled well to prevent dirt and debris from contaminating the water.
Wellpoint A pipe fitted with a driving point and a fine mesh screen used to remove underground water. A complete set of equipment for drying up ground including wellpoints, connecting pipes and pumps.
Wet Vent Drain or waste pipe that also acts for one or more fixtures on the same line.
Whirlpool Tub A bathtub with circulation jets in various spots throughout the tub that provide therapeutic massaging action.
Widespread A style of bathroom lavatory faucet having separate spout and handles, usually 8" from center of handle to handle.
Working Pressure Maximum pressure of the operating system permissible.
Working Water Water used in a home for most general purposes including bathing and laundering.
Wrought Copper Fittings Plumbing fittings used to connect copper tubes made of mechanically worked and toughened copper as opposed to an as-cast brittle copper.
Wye A Y-shaped fitting with three openings used to create branch lines. Allows one pipe to be joined to another at a 45 degree angle.
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