- Wall Bracket:
- An adjustable bracket which attaches to a slide bar or hanger allowing the user to pivot and rotate the position of a handshower.
- Wall-Mount Sink:
- Type of installation in which a lavatory is supported from the wall.
- Wall Thickness:
- The thickness of the tubing wall.
- Washdown Water Closet:
- YY.
- Waste and Overflow:
- The drain assembly for a bathtub. The outlet at the top removes the "overflow" water during tub filling and the drain at the bottom removes "waste" water when
the tub is drained.
- Waste Arm:
- Drain extension pipe, usually to extend a sink drain into a wall.
- Waste Plug:
- Drain stopper on a bathtub drain.
- Waste Shoe:
- Bathtub drain assembly.
- Waste Stack:
- YY.
- 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 shut off 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.
- Watt:
- A unit of electrical energy or power. One ampere x one volt equals one watt.
- Watt Density:
- Amount of watts concentrated per square inch of element blade surface area.
- 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.
- Wax Ring:
- Located between floor flange and toilet as a seal to prevent leakage and fumes.
- WC:
- Water Closet.
- Weak Well:
- Weak well application occurs when the pump lowers the water lever 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.
- WH:
- White.
- Whirlpool Tub:
- A bathtub with circulation jets in various spots throughout the tub that provide therapeutic massaging action.
- Whole House Trap:
- Also known as a main line trap. Normally an in-line "running" trap utilizing a "U" shaped fitting with a vent.
- 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.
|