A yoke vent is a vent pipe that connects upward from a soil or waste stack to the main vent, providing additional venting for the drainage system. It helps equalize pressure, preventing siphoning of water seals in traps and promoting efficient wastewater flow. Yoke vents are typically installed in multistory buildings where additional venting is needed to maintain proper pressure balance within the plumbing system. Correct installation and sizing of yoke vents are critical to maintaining effective drainage and compliance with plumbing codes.
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