PVC Adapter - MPT x MHTA PVC MPT x MHT adapter is used to transition a PVC pipe end or fitting with MPT (male pipe thread) to a MHT (male hose thread) connection. This Schedule 40 PVC Hose Thread x Pipe Thread Adapter has 3/4" MHT (Male Hose Thread) on one end and MPT (Male Pipe Thread) on the other. The MHT on this fitting are compatible with standard US garden hose threads. The MPT on this fitting are male national pipe threads.Please note: Thread tape is recommended for threaded PVC ends. Hose threads require a garden hose washer for proper sealing.