Plumbing - Building Water Supply Part 13

UL-listed and/or FM-approved pump with driver, controls, and accessories used for fire protection service. Fire pumps are of the centrifugal or turbine type and usually have an electric-motor or diesel-engine driver.

A pump with the shaft normally in a horizontal position.

A centrifugal pump characterized by a housing that is split parallel to the shaft.

A centrifugal pump in which the drive unit is supported by the pump, having its suction and discharge flanges on approximately the same center line.

Pump with controls and accessories used to maintain pressure in a fire protection system without the operation of the fire pump. Does not have to be a listed pump.

A centrifugal pump with one or more impellers discharging into one or more impellers discharging into one or more bowls and a vertical educator or column pipe used to connect the bowl(s) to the discharge head on which the pump driver is mounted.

Resistance of the relative motion between two bodies in contact with one another. In piping systems resistance creates a decrease in the velocity of a fluid at the surface with which it is in contact.

The pressure at a point in a fluid above that of the atmosphere; measured where atmospheric pressure is considered as0.

Gallons per minute.

The difference in elevation between two points in a body of fluids with the resulting pressure of the fluid at the lower point expressible at the height or pressure of the fluid.

A term (in piping systems) used to describe a system under pressure but at rest (not flowing).

Type of test used to locate leaks in za pressurized piping system.

A blade type device that provides flow within a centrifugal pump by using centrifugal force.

The lower portion of the inside of any horizontal pipe.

The elevation of the inside bottom of a pipe or conduit.

Energy possessed by a body in motion.

Term describing equipment and materials included in a list published by an organization acceptable to the authority having jurisdiction and concerned (a listing agency).

An agency accepted by the administrative authority that lists or labels certain models of a product and maintains a periodic inspection program on the current production of listed models. It makes available a published report of its listing, including information indicating that the products have been tested, comply with generally accepted standards, and are found safe for use in a specified manner.

Any substance which reduces the friction between moving solid surfaces.

Pressure less than atmospheric pressure.

Abbreviation for "national fire protection association".

Outside screw and yoke.

A pumping machine in which either pressure or suction is the result of the movement of a piston type plug or plunger.

A term used to describe a type of pump which delivers the same amount of fluid for each pumping cycle.

Force acting on a specific area usually measured in psig.

Loss of pressure due to friction as a fluid flows through piping.

Pound per square inch.

Pound per square gage.

A device or machine that raises, transfers, or compresses fluids or that attenuated gases especially by suction or pressure or both.

Apparatus for raising, exhausting, driving or compressing fluids, air or gases by means of a piston, plunger, or rotating vanes.

To work a pump, raise or move a fluid with pump. To move up and down like a pump handle.

A small usually high pressure pump used to maintain the design system pressure in a fire protection (sprinkler or standpipe) system.

An instrument to measure pressure of flow associated to a pump.

Liquid enters at the center of rotation of a pump impeller and is thrown outward into a casing or volute. (Volute and diffuser centrifugal, multistage, propeller, peripheral).

A term used to describe the volume of a moving fluid related to time. Measured in gpm, cu. ft./min., etc.

Pressure available under full flow conditions.

A device for lifting and discharging sewage; a device for moving sewage by entraining it on a high velocity stream, air or water jet.

A flush or exposed divider on a building having two or three hose threaded inlets feeding a single outlet, and serves as part of that building's fire protection system.

An integrated system of underground and overhead piping designed in accordance with fire protection engineering standards. The installation includes one or more automatic water supplies. The oration of sprinkler system above ground is a network of specially sized or hydraulically designed piping installed in a building, structure, or area, generally overhead, and to which sprinklers are attached in a systematic pattern. The valve controlling each system riser is located in the system riser or its supply piping. Each sprinkler system riser includes a device for actuating an alarm when the system is in operation. The system is activated by heat from a fire and discharges water over the fire area.

Wet-pipe systems.

Dry-pipe systems.

Re-action systems.

Deluge systems.

Combined dry-pipe and pre-action systems.

The pressure within a system under no flow conditions (at rest).

Static suction lift less the friction resistance of the suction pipe of a pump.

The vertical distance from the free surface of a liquid to the inlet of a pump.

Water tight receptacle placed at a low elevation so that liquids or liquid waste can be drained into and retained for removal usually to a higher elevation by use of a pump or pumps.

A mechanical device for removing liquid from a sump or pit.

The pressure or head developed by a pump to overcome friction loss under flow conditions.

Small knobs or buttons of rust on the inside of a pipe.

A state of fluid flow in which the instantaneous velocities and pressures exhibit irregular and random fluctuation, as produced by an abstraction of friction.

Term referring to a location in the direction of flow before reaching a referenced point.

A pressure less than atmospheric pressure. It is usually measured by the number of inches of mercury below atmospheric pressure.

A diffused matter suspended floating in the air and impairing its transparency, a substance in a gaseous state as distinguished from a liquid or solid state, or a gaseous substance that is at a temperature temperature below its critical temperature and, therefore, liquefiable by pressure alone.

The pressure of converting a liquid into a vapor ;boiling, evaporation, and flashing).

The rate at which liquids move through a piping system usually measured in feet per second.

A spiraling passageway inside of a centrifugal pump discharge casing.

Add 1 oz of a grade #1 or 2 grease at intervals of three to six months.

Use the lighter grease for operation at high speed or low room temperature. Mineral grease with a soda base is recommended.

The maximum desirable operating temperature for ball bearings is 180*F.