Plastic Reducing Coupling

These barbed pipe fittings are sized in common water pipe sizes. Given the fittings' aggressive hose barbs, plastic mainline tubing and black plastic water pipe will lock on for a leak-free hold after a hose clamp is installed over the tubing. These couplings allow a larger diameter plastic mainline tubing to be reduced and connected to a smaller diameter plastic mainline tubing or black plastic water pipe.