Plumbing Dictionary


Plumbing termonalogy.

Browse the glossary using this index

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B

BUILDING TRAP

A device, fitting or assembly of fittings installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.

BURNER

A device for the final conveyance of the gas, or a mixture of gas and air, to the combustion zone.

BURNER Atmospheric injection type

A burner in which the air at atmospheric pressure is injected into the burner by a jet of gas.

BURNER Injection (Bunsen) type

A burner employing the energy of a jet of gas to inject air for combustion into the burner and mix it with the gas.

BURNER Luminous or yellow flame

A burner in which secondary air only is depended on for the combustion of the gas.

BURNER Power

A burner in which either gas or air or both are supplied at pressures exceeding, for gas, the line pressure, and for air, atmospheric pressure, this added pressure being applied at the burner.

BURNER Pre-mixing

A power burner in which all or nearly all of the air for combustion is mixed with the gas as primary air.

BURNER Pressure

A burner which is supplied with an air-gas mixture under pressure (usually from 0.5 to 14 inches of water [124 to 3483 Pa] and occasionally higher).

C

CENTRAL FURNACE

A self-contained, gas burning appliance for heating air by transfer of heat of combustion through metal to the air, and designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.

CENTRAL FURNACE Down flow forced air type

A furnace designed with air flow essentially in a vertical path, discharging air at or near the bottom of the furnace.

CENTRAL FURNACE Forced air type

A central furnace equipped with a fan or blower which provides the primary means for circulation of air.

CENTRAL FURNACE Gravity type

A central furnace depending primarily on circulation of air by gravity.

CENTRAL FURNACE Gravity type with integral fan

A central furnace equipped with a fan or blower as an integral part of its construction and operable on gravity systems only. The fan or blower is to be used only to overcome the internal furnace resistance to air flow.

CENTRAL FURNACE Horizontal forced air type

A furnace designed for low headroom installation with air flow through the appliance essentially in a horizontal path.

CENTRAL FURNACE Up flow forced air type,

A furnace designed with air flow essentially in a vertical path, discharging air at or near the top of the furnace.

CENTRAL HEATING GAS APPLIANCE

A vented gas-fired appliance comprising the following classes as defined herein: boiler, central furnace, floor furnace, or vented wall furnace.

CHIMNEYS Factory-built chimneys

Chimneys that are factory made, listed by a nationally recognized testing agency, for venting gas appliances, gas incinerators, and solid or liquid fuel burning appliances.

CHIMNEYS Masonry

Field constructed chimneys built in accordance with nationally recognized codes or standards.

CHIMNEYS Metal

Chimneys made of metal ofO.135-inch (3.43 mm) minimum, galvanized or painted, unless suitably corrosion resistant, properly welded or riveted and built in accordance with nationally recognized codes or standards.

CIRCUIT VENT

A vent that connects to a horizontal drainage branch and vents two traps to a maximum of eight traps or trapped fixtures connected into a battery.

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