Help prevent sewer gas from entering your home while you vent your drain line with the Oatey 1-1/2 in. ABS In-Line Cheater Vent. This spring-loaded vent uses negative pressure to open and positive pressure to close. Also replaces secondary stack venting. ABS construction Use to vent drain lines Helps prevent sewer gas from entering your home Push to connect Spring-loaded to open with negative pressure and close with positive pressure NSF-24 listing for use in recreational vehicles.

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