Browse the glossary using this index
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
The purpose for which a building or portion thereof is utilized or occupied.
A combination of approved bends that makes two changes in direction bringing one section of the pipe out of line but into a line parallel with the other section.
Outside the structure.
The opening in a cap, spud or other device whereby the flow of gas is limited and through which the gas is discharged to the burner.
ORIFICE CAP (HOOD)
A movable fitting having an orifice which permits adjustment of the flow of gas by the changing of its position with respect to a fixed needle or other device.
A removable plug or cap containing an orifice and which permits adjustment of the flow of gas either by substitution of a spud with a different sized orifice or by the motion of a needle with respect to it.
A threaded connection or bolted flange in a pipe system to which a gas burning appliance is or may be attached. Outlets must be located in the room or space where the appliance is or may be installed.
OXYGEN DEPLETION SAFETY SHUT -OFF
A system designed to act to shut off the gas supply to the main and pilot burners if the oxygen in the surrounding atmosphere is reduced below a predetermined level.