150PSI Modular Bulkhead Fitting. This adapter has a 1.5" QD (Quick Disconnect, FPT (female NPT) with an O-ring) that threads on to one of the module bulkhead fittings and the other side is a 1.5" MPT with o-ring for the sealing. Ie, you don't use teflon tape or pipe compound on this fitting. It makes a very easy and clean connection with the o-ring providing the sealing. You can use something like a female adapter 435-015 to adapt from this fitting to a piece of 1.5" flexible pvc or rigid pvc pipe.
