Having trouble with emitters and fittings popping off your drip system? Excessive water pressure might be the culprit. Drip irrigation systems are designed to work with low pressure. With a pressure regulator in place at your water source, the water pressure is lowered and your problem is solved. The 3/4 in. FHT X 3/4 in. MHT pressure regulator comes preset at 30 PSI. Connects to 3/4 in. MHT outdoor faucet, hose bibb, or spigot on one end, and to supply tubing on the other end using a 3/4 in. FHT adapter (sold separately). The pressure regulator is made of high-impact acrylonitrile butadiene styrene (ABS) treated with UV inhibitors.