The ABCs of Plumbing – Shutoff Valves
While every home is required to have a shutoff valve inside to turn off water when plumbing work is being performed or in the case of an emergency, the location can vary. Knowing where your shutoff valve is important, so here is how to locate the valve.
Basement Shutoff Valve
Basement shut-off valves are usually located near the front foundation wall. The main water supply will come through the concrete floor or the wall. The valve is typically within 3-5 feet of where the main water enters. In other cases, the main water may enter somewhere else, like a ulitiy room, up through the floor, or near the water heater.
Crawl-space and a Basement
The shut-off valve may be where the water enters the basement or in some older homes, the shut-off may be inside the crawl space.
Crawl-space with no basement
The shut off valve will usually be located near the water heater or under the kitchen sink, but may be in another location. It may be inside the crawl-space; in which case, you may want to consider a secondary valve located up in the living space (near the water heater or under a sink).
Slab-on-grade construction
The shut-off valve will typically be located near the water heater or under the kitchen sink.
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Also check: The ABC’s of Plumbing: Vent Pipes
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