Series RPM pressure regulators are designed to convert varying, or excessive inlet pressure to a constant maximum preset downstream level. Regulators protect sensitive instruments, meters, tubing, filters and other piping components against surging pressures from pumps or external sources and permit the entire system to operate safely and effectively. Regulators convert inlet pressures up to 150 PSI to a predetermined maximum downstream pressure within the adjustable range of 5-75 PSI settings. They are offered with 1/2" NPT connections and seals of Buna-Nitrile, EPDM or Viton®. Plast-O-Matic Valves, Inc. 1384 Pompton Avenue| Cedar Grove, NJ, 07009