Plumbing Glossary

Understanding plumbing terminology can help you communicate better with plumbers and make informed decisions. Browse our comprehensive glossary of plumbing terms.

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A

2 terms

Aerator

A faucet attachment that mixes air with water for a smoother flow and water conservation.

Auger

A coiled cable tool used to break up and clear drain clogs, also called a plumber's snake.

B

2 terms

Backflow Preventer

A device that stops contaminated water from reversing into your clean water supply.

Burst Pipe

A ruptured pipe causing uncontrollable water leakage.

C

4 terms

Camera Inspection

Video inspection of pipe interiors using a waterproof camera to locate damage or blockages.

Cleanout

A removable access point in drain pipes for clearing clogs and inspections.

Clog

A blockage in pipes that restricts or stops water from draining properly.

Corrosion

Deterioration of metal pipes from chemical reactions, causing leaks and water quality issues.

D

1 term

Drain-Waste-Vent (DWV)

The pipe system that removes wastewater and vents sewer gases from your home.

E

1 term

Expansion Tank

A tank that absorbs pressure buildup from heated water to protect your plumbing system.

F

1 term

Flapper Valve

The rubber seal in a toilet tank that controls water flow during flushing.

H

1 term

Hydro Jetting

High-pressure water cleaning that blasts away stubborn blockages and buildup from inside pipes.

L

1 term

Leak

Water escaping from pipes or fixtures through damaged areas or failed connections.

P

3 terms

P-Trap

A curved pipe section that holds water to block sewer gases from entering through drains.

Pipe Relining

Trenchless pipe repair that installs a new pipe inside the old one without excavation.

Pressure Regulator

A valve that controls and reduces water pressure entering your home from the main line.

R

1 term

Root Intrusion

Tree roots growing into sewer pipes through cracks, causing blockages and structural damage.

S

6 terms

Scale Buildup

Mineral deposits that accumulate inside pipes and appliances, reducing flow and efficiency.

Sewage Backup

A condition where wastewater reverses flow and comes back up through drains.

Sewer Scope

A video inspection of the main sewer line from house to street, often done during home buying.

Shutoff Valve

A valve used to stop water flow to a fixture or building.

Sump Pump

A pump that removes accumulated water from basement pits to prevent flooding.

Supply Line

Pipes that carry clean water from the main line to fixtures throughout your home.

W

2 terms

Water Hammer

A loud banging noise in pipes caused by sudden changes in water pressure.

Water Main

Primary pipe delivering water to your property.

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