PVC Adapter - Slip x MHTA PVC Slip x MHT adapter is used to add a 3/4" MHT (male hose thread) connection to a plain PVC pipe end.Please note: PVC slip connections require primer and cement for a water tight seal. Hose threads require a garden hose washer for proper sealing. Matching PVC Pipe & Fitting SizesSelecting the correct size fittings to match your PVC pipe can be confusing if you do not already know what size PVC pipe you have. All plumbing grade PVC should have size and rating information imprinted on the outside of the pipe. PVC pipe is named for the inside diameter, commonly referred to as "a nominal size". If not able to locate this information then simply measuring the inside or outside diameter will help you determine the correct pipe size using the table below. Schedule 40 PVC Pipe Size TableNominal PVC Pipe Size1/2"3/4"1"1 1/4"1 1/2"2"Average Inside Diameter0.622"0.824"1.049"1.380"1.610"2.047"Actual Outside Diameter0.840"1.050"1.345"1.660"1.900"2.375"Fitting selection is easy once you determine your PVC pipe size - just match the nominal pipe size to the corresponding fitting size. Example: If your pipe measures 0.824" ID (inside diameter) or 1.050" OD (outside diameter), which is 3/4" PVC pipe, you will select 3/4" PVC fittings.