Glossary of Pipe Fittings & Flanges
This section gives you some idea about some of the most common terms used in pipe fittings and flanges.
| A | B | C | E | F | G | H | I | J | L |
| M | N | O | P | R | S | T | U | W |
A
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Adapter: A fitting needed for changing from one type of end condition to another.
ANSI: American National Standards. A piping specification. ASME: American Society of Mechanical Engineers. A piping specification. ASTM: American Society for Testing Materials. A piping specification. Ambient Temperature: The average temperature of the atmosphere in the area of an appliance. Aqueous: Containing water |
B
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Ball valve: Opens by turning a handle attached to a ball inside the valve.
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. Bulkhead fitting: Used to attach flexible pipes with the help of male adapters. |
C
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Coupling:A fitting that joins two pieces of pipe.
Cast Iron: Metal formed by casting in molds. Compression Fitting: A sealed pipe connection without soldering. Cross: Used for 4-way branch connections. |
E
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Elbows: Change direction of pipe.
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F
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Ferrule: Consists of a circular clamp which is used to hold together.
Female thread: Threaded on the outside. Flange: A type of pipe fitting that connects via nuts and bolts. |
G
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Gate valve: It is a type of valve having a gate that moves perpendicular to flow of the service.
Globe valve: Linear motion valves with spherical design. |
H
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Hollow plug: A hollow plug is a valve used to restrict or prevent the flow of a liquid or gas through a pipe.
Hex plug: The hex pipe plug is threaded in the end and the top of the plug takes a hexagon shape. |
I
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I.D.: Inside diameter. All pipes are sized according to their inside diameter.
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J
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Joint thread: A connection in which the internal and external fittings are threaded and they are also screwed together.
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L
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Lap joint flange: Flanges are used on piping fitted with with lapped pipe or with lap joint stub ends.
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M
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Male thread: Threaded on the inside.
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N
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Nipple: A length of straight pipe with male threads on both ends.
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O
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O.D.: Outside diameter. All pipes are sized according to their outside diameter.
Orifice flange: Flanges where orifice plate or flow nozzle is used. |
P
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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. |
R
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Reducer: A fitting that connects pipes of different sizes.
Rigid coupling: Used to connect rotating members such as shafts. |
S
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Sanitary Fitting: Fittings used to join the assorted pipes in a drain, waste and vent system.
Sleeve: A fitting with a base plate and attached to a sleeve portion. Stop Valve: A valve that controls the flow of water. |
T
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Tee: A T-shaped pipe fitting with three openings used to create branch lines.
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U
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Union: Three-piece fitting that joins two sections of pipe and they also can be disconnected without cutting the pipe.
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W
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Wye: A Y-shaped fitting with three openings used to create branch lines.
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