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Frequently Asked Questions (FAQ) about Water Shut-Off Valves

Sunday, October 24, 2021

Water shut-off valves need to be both accessible and functional (not frozen) for emergency use, or just to change out a plumbing fixture. Here’s a collection of our articles about them:

How do I find the main water shut off valve for my house?

How do I shut off the main water service in a mobile/manufactured home?

• Where do I find the main water shut-off valve for my condominium?

Does a home inspector locate the main water shut-off valve?

• Does a home inspector check and test shut-off valves? 

Does a water heater need a shut-off valve?

• Does code require a water shut-off valve at toilets?

• Does code require a water shut-off valve at sinks?

• Does code require a water shut-off valve at showers?

• Does code require a water shut-off valve at bathtubs?

Does code require a water shut-off valve for dishwashers?

Which plumbing fixtures require water shut off valves in a home? 

Does a refrigerator water supply line require a shutoff valve behind it?

Is it alright to have a shut-off valve on both the hot and cold water pipes at a water heater?

Is a shut off valve in-line on a supply line to a plumbing fixture acceptable? 

Is a shut-off valve required at the cold water inlet to a mobile home water heater?

• What is the average life expectancy of plumbing fixture water shut-off valves? 

 Is a sink or toilet shut-off valve behind an access panel approved by code? 

• Where do I turn off the water to the shower?

• Where is the water shut-off valve for my refrigerator?

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