TL;DR
A drip leg is a short, capped vertical extension of gas piping installed at a tee just before an appliance's shutoff valve to catch moisture, pipe scale, and debris before they reach the gas valve. The fuel gas code requires this sediment trap at most appliances — water heaters, furnaces, dryers — with the leg at least 3 inches long.
What it means
A drip leg is a short, capped vertical extension of gas piping installed at a tee just before an appliance's shutoff valve to catch moisture, pipe scale, and debris before they reach the gas valve. The fuel gas code requires this sediment trap at most appliances — water heaters, furnaces, dryers — with the leg at least 3 inches long. Inspectors flag installations where the tee is missing or plumbed so gas flows through the trap instead of past it.
Where it sits in the glossary
Drip leg 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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