Fetterolf Corporation, 2021 Cressman Rd, Skippack, PA 19474, US

Warren Controls designs, manufactures and markets control products for the military, commercial and industrial markets. The company offers control valves, level controls, vacuum breakers and regulators. It offers four broad product lines for building automation control valves, industrial process valves up to ANSI Class 300, mechanical level controls for deaerators and boilers as well as military / marine valves to Military Standards (MIL) specifications. Situated in Bethlehem, Pa., Warren Controls systems are installed on many systems including Deballist, Reverse Osmosis, Fire Main, Air Conditioning and Temperature Control.