The volume or weight of a fluid, displaced by a floating body.

A motor-driven appliance that reduces food and other waste by grinding so it can flow through the drainage system.

Gases that form ion components between molecules of a fluid or other substance.

A usage percent applied to the water flow rate that lowers the connected load, used because not all fixtures will discharge simultaneously.

Liquid and waterborne wastes derived from ordinary living processes that are free of industrial wastes and of such a character as to permit satisfactory disposal without special treatment into the public sewer or by means of a private sewage disposal system.

Water primarily indented for direct human use, such as that supplied to plumbing fixtures.

A watertight tank in a septic system placed between the septic tank and the distribution box and equipped with a pump or automatic siphon designed to discharge sewage intermittently to a disposal field so that rest periods may be provided between discharges.

When two wedges acting as a closure member in a gate valve are in contact with the seating faces.

Two changes of direction installed in succession, or series, in continuous pipe.

A valve having two ports to overcome line pressure imbalance.

A tee made with easy (long-radius) curves between the body and branch.

Any piping running to a lower level.

A pipe that carries rainwater from a roof to its ultimate point of disposal.

A location in the direction of flow from a referenced point.

Any pipe that carries wastewater or waterborne wastes in a building drainage system.

The area containing a piping arrangement from a septic tank for the purpose of disposing unwanted liquid waste into the soil.

A type of fitting used in drainage systems with a wide radius that allows a smooth flow of wastewater with minimum obstructions.

The piping within a public or private premises that conveys sewage, rainwater, or other liquid wastes to an approved point of disposal immediately outside the building.

A measure of the probable discharge of a fixture or device into a drainage system.

The deviation between actual values over time and a predetermined value.