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Property Types & Construction

Shutoff Valve

Definition and meaning of Shutoff Valve in real estate.

A shutoff valve is a plumbing valve designed to stop the flow of water or gas to a specific fixture, appliance, or the entire property. These valves are critical safety features that allow homeowners to isolate water or gas lines for repairs or in emergencies.

In more detail

Local shutoff valves are typically located under sinks, behind toilets, and next to major appliances like water heaters and washing machines. There is also a main water shutoff valve, usually located where the water main enters the house, which turns off water to the entire building.

Gas systems feature similar local and main valves. Home buyers should locate the main water and gas shutoff valves immediately upon moving into a home so they can act quickly in the event of a burst pipe or a leak.

Key facts

CategoryProperty Types & Construction
Common LocationsUnder sinks, behind toilets, water heater, utility closet
Critical ActionTurn clockwise to close, counter-clockwise to open
Applies toPlumbing and gas systems
Example

When a toilet begins to overflow, the homeowner quickly turns the small chrome shutoff valve located behind the bowl clockwise to stop the water flow before calling a plumber.

Frequently asked questions

Why is my main water shutoff valve important?

It allows you to turn off all water to the home during a plumbing emergency, such as a burst pipe, preventing major water damage.

How often should shutoff valves be tested?

It is wise to test shutoff valves once or twice a year to ensure they turn smoothly and do not freeze in place due to mineral buildup.

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