These plastic pipe fittings adapt common water pipe sizes to a common pipe thread fitting.
The male pipe thread (MPT) and hose barb (INS) come in a variety of common sizes to fit both plastic mainline tubing and black plastic water pipe. The aggressive hold of the hose barbs lock on when the plastic mainline tubing is clamped on with a hose clamp to eliminate leaks. By using thread tape, or other types of pipe thread sealant, the male threads will also be leak free when tightened up with a wrench or pliers.