Screw this 1-1/2" male threaded fitting into any of our polyethylene gray or black tanks and then just solvent weld the hub (socket) end onto the a length of 1-1/2" ABS pipe. Great for venting tanks and for running your gray water lines to your dump valve.

It makes a water-tight connection with just 1 or 2 turns past hand tight. No need for thread tape or any adhesives on the threads.

Typically you will need one for every 1-1/2" female threaded fitting on your tank.