ANSI: American National Standards. A piping specification.
ASME: American Society of Mechanical Engineers. A piping specification.
Ambient Temperature: The average temperature of the atmosphere in the area of an appliance.
BSP: British Standard Piping. A piping specification.
Bushing: A pipe fitting, threaded on both the inside and outside, used for joining pipes with different diameters together.
Coupling: A fitting that joins two pieces of pipe.
Cast Iron: Metal formed by casting in molds.
Cross: Used for 4-way branch connections.
Elbows: Change direction of pipe.
Female thread: Threaded on the outside.
Flange: A type of pipe fitting that connects via nuts and bolts.
Hex plug: The hex pipe plug is threaded in the end and the top of the plug takes a hexagon shape.
I.D.: Inside diameter. All pipes are sized according to their inside diameter.
Lap joint flange: Flanges are used on piping fitted with lapped pipe or with lap joint stub ends.
Male thread: Threaded on the inside.
Nipple: A length of straight pipe with male threads on both ends.
O.D.: Outside diameter. All pipes are sized according to their outside diameter.
Orifice flange: Flanges where orifice plate or flow nozzle is used.
Pipe fittings: Available in various shapes, sizes and materials, they are used to connect pipes.
Plug: Cap end inserted into the end of tubing to dead-end the flow.
Reducer: A fitting that connects pipes of different sizes.
Tee: A T-shaped pipe fitting with three openings used to create branch lines.
Union: Three-piece fitting that joins two sections of pipe and they also can be disconnected without cutting the pipe.
Wye: A Y-shaped fitting with three openings used to create branch lines.