| ID |
 |
Inside Diameter. Diameter measurement from the inside of a pipe. Commonly used for sizing pipe. |
| IPS |
|
Iron Pipe Size (OD). Same as NPS. Standard pipe threads. Also Internal Pipe Swivel connection (female). |
| ISO |
|
International\ Organization for Standardization based in Geneva Switzerland. Among the many standards it issues are pump and seal standards for the metric community. |
| ISO 9000 |
|
A series of five standards for developing a total quality management system. Developed by the International\ Organization for Standardization. |
| Impeller |
|
Rotating wheel with vanes found inside a centrifugal pump. As it spins at high speed it draws fluids in and thrusts them under pressure to the discharge outlet. |
Incomplete Combustion |
|
A product of inadequate ventilation which restricts the flow of air into an appliance. This may lower oxygen content in the surrounding air. |
| Incoming Inlet Temperature |
|
Temperature of water entering the tank |
| Indirect Wastes Pipe |
|
Waste pipe used to convey gray water by discharging it into a plumbing fixture such as a floor drain. |
| Induction Motor |
|
The most common type used in industry. Has a slippage of 2 to 5 percent compared to synchronous motors. |
| Influent |
|
The stream entering a unit, stream or process, such as the hard water entering an ion exchange water softener. |
| Injection |
|
The drawing of primary air into a gas burner by means of a flow of fuel gas. |
| Inlet |
|
An entrance, opening, or aperture for the intake of fluid or gas. |
| In-line Pump |
|
Small pump which pumps fluid through a line on which it is supported and mounted. |
| Input |
|
The amount of fuel used by a water heater in a given period of time, usually 1 hr. |
| Input Rate |
|
The quantity of heat or fuel supplied to an appliance, expressed in volume of heat units per volume of time (BTUs/hour). |
| Input Rating |
|
The gas burning capacity of an appliance in BTU's per hour as specified by the manufacturer. |
| Insanitary |
|
So unclean as to be a likely cause of disease; Contrary to sanitary principles injurious to health. |
| Inserts |
|
Faucet handles |
| Insert Fittings |
|
Fittings equipped with external, annular rings fir gripping, which are inserted into flexible rubber or plastic tubing as a connection. |
| Island Vent |
|
An air admittance valve |
| Isolation Mount |
|
The four small rubber feet located beneath a whirlpool's pump base, or attached to the pulse canister assemblies, designed to reduce noise and vibration when the whirlpool is running. |
| Instantaneous Water Heater |
|
A type of water heater that heats water as it flows through a heat exchanger coil. |
| Insular ® |
|
Kohler's registered trade name for factory-installed insulation, which minimizes condensation on the outside of the tank when exposed to high humidity. |
| Insuliner ® |
|
Kohler's Registered trade name for factory-installed tank insulation, which minimizes condensation on the outside of the tank (also known as tank sweating) when exposed to high humidity. |
| Integral Stops |
|
Stops that allow the owner to shut off water supply at the faucet for maintenance without shutting off the water supply to the entire house. |
| Integral Vacuum Breaker |
|
A device typically used in a sink or shower sprayer to keep water from backflowing into the fresh water supply. |
| Interceptor |
|
Device for separating grease and oil from drainage system. See grease trap. |
| Isothermal |
|
Action that takes place with no change in temperature. |
