Model PRV Series C150E valves regulate high upstream (inlet pressure) to a lower regulated downstream (outlet pressure) constant pressure within a range regardless of water flow. An adjustable spring-loaded balancing valve factory set automatically regulates the downstream pressure to 50 PSI. The unleaded bronze bodies are available in 1/2-, 3/4- and 1-inch sizes, which are supplied with a pressure range of 15-75 PSI or 15-150 PSI. Internal stainless steel springs and fasteners are corrosion resistant. The standard model comes with female/male NPT inlet connection and single union end with female NPT outlet connection.