Glossary of Plumbing Terms - L - Keidel Bath, Kitchen, Plumbing, Cabinetry, Appliances

Welcome to Keidel's Plumbing Glossary. Every industry and trade has its own standards and terminologies. This glossary is our attempt to help the general public understand some of the terms unique to our industry.

Our database contains over 1000 unique terms, compiled from a variety of public and private sources. To use the glossary efficiently you can click on the letter of the desired term that you would like to find. For example: click on "C" to find out about "Closet Augers" or "P" for "Petcock." Definitions listed here are provided without warranty.

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

"L" Tubing	An industry standard for copper tubing defined by the tube wall thickness and identified by a "blue" strip. Type "L" copper tube wall is approximately 50% greater thickness than Type "M"

Laminar Flow	Streamline flow in a fluid near a solid boundary

Laminated glass	Glass that has been made by uniting layers of glass in order to strengthen the glass.

Langelier's Index	A calculated number used to predict whether or not a water will precipitate, be in equilibrium with, or dissolve calcium carbonate. It is sometimes erroneously assumed that any water that tends to dissolve calcium carbonate is automatically corrosive.

Lateral Sewage Line	A sewage line that connects one sewage pipe with another.

Laundry Tray	Laundry Tub

Laundry Tub	Very deep sink used in a laundry room for soaking or washing clothing.

Lav	Lavatory

Lav Tube	Water supply tube for lavatory

Lavatory	A fixed bowl or basin with running water and drainage for washing. Bathroom sink. Also used to indicate a restroom or a bathroom.

LDO	Lint, Dust, and Oil

Leach Field	Porous soil area, through which septic tank leach lines run, emptying the treated waste

Leach Lines	Pipes that carry effluent from the septic system out to the leach field.

Lean Mixture	An air-gas mixture that contains more air than needed for complete combustion of the gas.

Leader	Pipe carrying rainwater to the ground or sewer.

LH	Left Hand

Lien	A legal right to hold another's property, or to have it sold, or applied for payment of a claim, especially to satiisfy a debt.

Lien Release	A written document from the contractor to the owner that releases the Lien, Mechanic's or Material following its satisfaction. (see Mechanic's lien)

Lien Waiver	A written document from a contractor or material supplier having lien rights against an owner's property that relinquishes all or part of those rights.

Lifting Flame	See Floating Flame

Lifts	Separated segments of pipe (banded or unbanded for ease of handling).

Length	A unit of linear measure for pipes, such as 10 or 20 ft.

Life Cycle Labs	A place where water heaters are tested at an accelerated rate to simulate life expectancies.

Light Duty	Small commercial applications

Lime	See sediment.

Limit stop	Faucet control unit used to adjust maximum water temperature

Lock Nut	Nut fitted into a piece of pipe and screwed onto another pipe to join the two pieces

Low Consumption Toilet	A class of toilet designed to flush using 1.6 gallons of water or less. Also known as "Water-saving" toilets.

LP	Liquid propane. A fuel for gas water heaters.

LS	Limited Service - pipe not meeting specification, often mill rejects

L T C	Long Thread and Coupling. A casing connection.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Not finding the term you seek? Let us know what we should add to the Glossary