TL;DR
A supply stop is the small shutoff valve installed at each fixture so water to a faucet, toilet, or appliance can be cut without closing the whole house. Angle stops turn the flow 90 degrees out of a wall; straight stops serve lines rising from the floor, with 1/2 inch inlets and 3/8 inch compression outlets being the common pattern.
What it means
A supply stop is the small shutoff valve installed at each fixture so water to a faucet, toilet, or appliance can be cut without closing the whole house. Angle stops turn the flow 90 degrees out of a wall; straight stops serve lines rising from the floor, with 1/2 inch inlets and 3/8 inch compression outlets being the common pattern. Quarter-turn ball versions have largely replaced multi-turn stems because old rubber-washer stops seize and drip after years untouched.
Where it sits in the glossary
Supply stop is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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