Plumbers School

A valve attached to a pressurized water supply pipe and so designed that when activated it opens the line for direct flow into the fixture at a rate and quantity to operate the fixture properly, and then gradually closes to reseal fixture traps and avoid water hammer.

The organization operating the gas distribution system, or supplying the gas fuel that is being used.

A permanently mounted manually operated device that provides the means for connecting an appliance to, and disconnecting an appliance from, the gas supply piping. The device includes an integral, manually operated gas valve with a nondisplaceable valve member and is designed so that disconnection can be accomplished only when the manually operated gas valve is in the closed position.

Appliances such as gas operated coffee brewers and coffee urns and any appurtenant water heating equipment, food and dish warmers, hot plates, griddles, waffle bakers and other appliances designed for installation on or in a counter.

A gas conduit which depends for tightness on joint packing, or on any wall structure other than that formed by a continuous one-piece metal tubing member.

See ADMINISTRATIVE AUTHORllY.

Vents constructed of sheet copper not less than 0.024-inch (0.61 mm) or 0.040-inch (1.02 mm) minimum galvanized steel or other approved noncombustible corrosion resistant material.

Factory made gas vents listed by a nationally recognized testing agency for venting listed or approved appliances equipped to burn only gas.

Factory made gas vents listed by a nationally recognized agency for venting listed or approved gas fired vented wall furnaces.

Factory made gas vents listed by a nationally recognized testing agency for venting listed or approved appliances equipped to bum gas or oil.

See SPECIFIC GRAVIY.

An interceptor whose rated flow exceeds 50 gpm and is located outside the building.

An interceptor whose rated flow is 50 gpm or less and is located inside the building.

See "Supports."

The number of BTU's produced by the combustion, at constant pressure, of 1 cu ft (0.0283 m3) of gas when the products of combustion are cooled to the initial temperature of the gas and air, when the water vapor formed during combustion is condensed, and when all necessary corrections have been applied.

1. aid, assistance; also a source of aid 

2: remedy, relief

3: one who assists another 

4: the services of a paid worker

A drainage branch pipe extending laterally from a soil or waste stack or building drain, with or without vertical sections or branches, that receives the discharge from two or more fixture drains or branches and conducts the discharge to the soil or waste stack or to the building drain.

Any pipe or fitting that makes an angle of less than 45 degrees (0.79 rad) with the horizontal.

Water at a temperature greater than or equal to 120 F (49 C)

A gas appliance of the floor type providing for top cooking, roasting, baking or broiling, or any combination of top cooking with any of these other functions and not designed specifically for domestic use.