Plumbing Dictionary


Plumbing termonalogy.

Browse the glossary using this index

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J

JOINT - Expansion

A loop, return bend or return offset that provides for the expansion and contraction in a piping system and is utilized in tall buildings or where there is a rapid change of temperature, as in power plants, steam rooms and similar occupancies.

JOINT - Flexible

Any joint between two pipes that permits one pipe to be deflected or moved without movement or deflection of the other pipe.

JOINT - Mechanical

See "Mechanical joint."

JOINT - Slip

A type of joint made by means of a washer or a special type of packing compound in which one pipe is slipped into the end of an adjacent pipe.

JOINT, PLASTIC ADHESIVE

A joint made in thermoset plastic piping by the use of an adhesive substance which forms a continuous bond between the mating surfaces without dissolving either one of them.

JOINT, PLASTIC HEAT FUSION

A joint made in thermoplastic piping by heating the parts sufficiently to permit fusion of the materials when the parts are pressed together.

JOINT, PLASTIC SOLVENT CEMENT

A joint made in thermoplastic piping by the use of a solvent or solvent cement which forms a continuous bond between the mating surfaces.