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.

Products are organized and sold under fully dedicated divisions, each staffed with an experienced and highly trained team of dedicated technical sales, applications engineering and customer service support personnel.

Company divisions include:
Automatic Timing & Controls, ATC Diversified Electronics, BelGAS, BelGAS CP, BelGAS FM, Bellofram Diaphragm Division, Bellofram Precision Controls, Bellofram Silicones, EZ Flow Control, Marsh Instruments/Pascal Controls, Marsh Medical, Thermocouple Products, and WNS Lowery.

Marsh and Bellofram were sister companies of the Desco Corporation. They were combined into Marsh Bellofram in January 1995.

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.

Desco moved Bellofram from its plants in Pelham, New Hampshire, and Burlington, Massachusetts, to the Newell, West Virginia, facility designed, constructed and fully integrated specifically for the high-volume, highprecision manufacture of elastomer products.

Meanwhile, Marsh Instrument Company was originally established in 1865 in Skokie, Illinois, as the James P. Marsh Company. Marsh was acquired in 1988 by Desco and relocated to Hastings, Nebraska, to share operations with Desco’s Marshalltown Instruments. Marshalltown had been founded in 1918 in Marshalltown, Iowa.v

Since Marsh Bellofram became one entity in the 1990s, it has continued to grow with strategic acquisitions that play to its core strengths of process, automation, measurement, and control. It is built for continued growth through the highest product quality standards, critical manufacturing capabilities, innovative engineering, and an unparalleled dedication to customer service and support.

Model Piston Type - PDP Series - Differential Pressure Gauge - Datasheet