IF YOU LIVE IN FRISCO TX CALL A FRISCO PLUMBER

COMMON PLUMBING TERMINOLOGY FOR FRISCO

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N

NEMA National Electrical Manufacturers Association
NH  ( No Hub )
NKBA National Kitchen and Bath Association
NOM Nominal. Usually refers to the Inside diameter of trade sizes of copper pipe and some CPVC pipes. Not for Iron Pipe connections. For example, a ½” NOM Comp. Fitting is actually 5/8″ because ½” pipe has an OD of 5/8″.
NPS National Pipe Straight threads standard, Same as IPS
NPSP (Discharge) Non Point Source Pollution. Nutrients, sediments, toxic substances, and pathogens that degrade waterways. NPS occurs mainly through stormwater runoff.
NPSHA Net Positive Suction Head Available to prevent cavitation of the pump. It is defined as:
Atmospheric pressure + gage pressure + static pressure – vapor pressure – friction loss in the suction piping.
NPSHR Net Positive Suction Head Required to stop a pump from cavitating. This number is provided by the pump manufacturer.
NPT National Pipe Tapered thread standard. The same as IPS.
NSF National Sanitation Foundation
Natural Gas A colorless, odorless fuel derived from the earth, consisting primarily of Methane (CH4). Odors are added to aid in leak detection.
Neo Angle Base A shower base designed to allow the shower to fit into a corner using minimal floor space while maintaining an elegant look.
Negative Pressure Less than atmospheric pressure.
Net Usable BTU That portion of a fuel’s heat energy actually transferred into the water by a heater.
Nipple A short length of pipe installed between couplings or other fittings.
Nipple Extractor A tool used to unscrew sections of pipe.
No-Hub Connector A connector for no-hub iron pipe consisting of a rubber sleeve and a stainless steel band secured by hose clamps. A variation, a neoprene sleeve with two adjustable steel bands, is used for connecting dissimilar materials, as when connecting new plastic pipe to an existing cast-iron drainpipe
Non-CFC Foam Insulation that minimizes the use of Chlorofluorocarbons.
Non-Ferrous Not containing iron.
Non-Potable Not suitable for drinking.