The Tectite by Apollo 3/4 in. Bronze Double Union Push-To-Connect Water Pressure Regulator with Gauge sets a new standard in water pressure regulation. It is designed to reduce incoming water pressures to a safe level to protect plumbing fixtures and appliances. With simple adjustability and an instant read, color-coded dial to provide downstream pressure measurement, this valve solves all of the annoyances of pressure regulators from the past. It also assists in the control of pressure surges from entering the structure from the water main to further protect fixtures and appliances. Excessive high pressure within a plumbing system can cause damage over time. A pressure regulator should be installed after the main line to help protect plumbing. Featuring a superior flow rate, durable construction, and fitted with Tectite by Apollo Push-To-Connect fittings, this 36ELF can be easily integrated into any PEX, CPVC or copper piping system.