Plumbing Dictionary


Plumbing termonalogy.

Browse the glossary using this index

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N

NATIONAL PIPE THREAD

National Pipe Thread, a standard method of sizing tapered threaded pipe.

NATIONAL PIPE THREAD STRAIGHT

A standard method of sizing straight threaded pipe.

NATIONAL SANITATION FOUNDATION

A testing laboratory.

NATURAL DRAFT VENTING SYSTEM

A venting system designed to remove flue or vent gases under non positive static vent pressure entirely by natural draft.

NIPPLE

A short length of pipe or tubing.

NONPOTABLE WATER

Water not safe for drinking or personal or culinary utilization.

NUISANCE

Public nuisance as known as common law or in equity jurisprudence; whatever is dangerous to human life or detrimental to health; whatever structure or premises is not sufficiently ventilated, sewer, drained, cleaned or lighted, with respect to its intended occupancy; and whatever renders the air or human food or drink or water supply unwholesome.