Designed specifically for ultra pure processing needs, Series PRU features a convoluted Teflon® diaphragm to sense and control downstream pressure in a piping system. Capacity is 5-100 PSI. Valve body materials are Kynar®, PVDF or natural polypropylene. Plast-O-Matic Valves, Inc. 1384 Pompton Avenue| Cedar Grove, NJ, 07009