Protruding fitting is used to attach a 1-1/2" ABS vent pipe to your ABS holding tank. Protruding fittings are preferred for the tops of tanks so that air cannot be trapped inside tank.
This slip fitting is solvent welded into your holding tank. Requires a 1-13/16" hole cut in the tank. Pipe then inserts in fitting and is secured by solvent welding with common solvent cement. For an extra strong connection we recommend using our regrind and an ABS slurry.
Used for ABS gray tank vents and drains.