Marsh and Bellofram were sister companies of the Desco Corporation. They were combined into Marsh Bellofram in January 1995. Headquartered in Newell, West Virginia, USA, The Bellofram Group of Companies is an AS9100D and ISO9001:2015 certified leading global manufacturer of high-performance OEM, industrial and process control instrumentation, including timers and counters, digital controllers and panel meters, RTDs and thermocouples, pressure instruments and gauges, FRLs, cylinders, natural gas and propane pressure regulators, air pressure regulators and transducers, tank and liquid level measurement systems, pump and motor protection switches and alternating relays, as well as sensors, DC tachometers, encoders, industrial diaphragms, and specialty silicones.
Prior to that, Bellofram was originally established in the Boston, Massachusetts, area in 1953 to manufacture elastomeric rolling diaphragms. John Taplin, the founder and original owner of Bellofram, designed air cylinders, air regulators, gauge protectors (diaphragm seals), and other pneumatic and hydraulic devices using his diaphragms. In the early 1980s, Rexnord purchased Bellofram, and then in 1986 sold Bellofram to the Desco Corporation of Columbus, Ohio.
Becoming a member of the Bellofram Group of Companies in 2011, ServoTek Products Inc., is a world renowned manufacturer of Instrument-grade DC tachometers, low cost encoders, and tachsyn transducers, serving OEM customers involved in aerospace, automotive, industrial machinery control, robotics, lift and process monitoring related applications
