Marsh Bellofram pressure regulators control the pressure in air lines used by pneumatic tools and devices. To provide consistent pressures, they remove fluctuations in the air supply and are adjustable via different methods. Some air pressure regulators attach to devices such as gauges, filters, lubricators, and displays.

Automatic Timing and Controls

For over 80 years, process engineers and machine designers have turned to Automatic Timing & Controls first for reliable control products. These high-performance products are engineered to provide accurate and repeatable operation in all types of industrial environments. Our products play an integral part in countless industries; including food processing, plastics, packaging, water treatment and many OEM applications. The ATC product family has expanded to include 1/16 DIN timers, panel-mounted timers, electromechanical timers, counters, solid state cube and plug-in timers, photoelectric laser sensors, and time delay relays (TDR).

Digital Panel Meters

DigiTec offers the most complete, customized and Versatile line of Digital Controllers in the industry. Reliability is the most important single factor in choosing a digital controller, and DigiTec's reputation has been built on exactly that. Our products play an integral role in industrial applications including packaging, level flow, weighing, and pumping applications.

Tachometers on the WESTCON line are rugged built to convert rotary speed to a linear output voltage. Tachometers are used widely for aviation, marine, mining, oil and gas production plus other demanding applications.

Thermo Couplers

As a leader in the manufacturing of temperature sensors for over 45 years, TCP has succeeded in building strong working relationships with our customers.

Our long history of working closely with our customers has yielded many innovative new ideas. By relentlessly pursuing solutions for the marketplace, TCP has developed several significant innovations. Several of our "firsts" include: Subminiature thermocouple connectors, high pressure wave rings, multi-point thermocouples and color coded ceramic connectors. TCP also designed and patented the exclusive "Knife Edge" design which is used in our "Tube-Temp" thermocouple. The Tube-Temp is the most accurate measurement device for fired heater and industrial boiler tubes on the market.

Pressure Instruments and Gauges

For more than 140 years, the Marsh name has been known for quality instrumentation throughout the world. Originally founded in 1865, Marsh Instruments was known as the Jas P. Marsh Company located in Skokie, IL. In 1988, Marshalltown Instruments was added to the line to allow Marsh Instruments to manufacture a complete selection of pressure gauges and thermometers. With over 215 years of combined experience, the product line has developed into the most comprehensive gauge line in the world. Our pressure gauges are used in countless applications where accuracy, dependability and durability are essential. Whether a standard design, or a specially designed pressure gauge, Marsh Instruments stands ready to provide a precision instrument adaptable to wherever pressure is measured.

Gas and Propane Regulators

BelGAS, the leader in pressure regulator design, offers the Oil, Gas and Pipeline Industry the same precision and reliability in flow control and pressure control that the control valve market has enjoyed for over 40 years. At BelGAS, we have raised the industry standard for quality, accuracy, and dependability. Even more important is that we provide this value to our customers at an economical price.

Air Regulators and Transducers

Precision Control Devices (PCD)
Marsh Bellofram's line of regulators started with an idea that changed regulator design for the entire industry.

In 1955, Bellofram Corporation introduced the rolling seal diaphragm design for a line of low-friction cylinders and soon adapted the design to a new line of gas pressure regulators. This new rolling seal diaphragm design produced a gas regulator of unsurpassed precision and repeatability. This design innovation is present in the entire line of Marsh Bellofram regulators, relays, I/P's and E/P's.

Rolling Diaphragms

Bellofram Elastomeric Diaphragms
In 1950, Bellofram introduced the original rolling diaphragm for a wide variety of industries and applications. Since that time one billion diaphragms have been used successfully throughout the world.

Engineering plays a critical role at every level in our manufacturing cycle. From design, tooling completion, to integrating procedures into production processes, is one aspect of total quality commitment.

The performance of the rolling diaphragm depends, in large part, on the preparation of materials. Raw materials are accepted after close scrutiny and absolute conformity to tight specifications. Elastomers are compounded with extreme care, then coded to ensure complete batch traceability. Reinforcing fabrics are woven or knitted to specifications developed exclusively by Bellofram. Meticulous preforming practices help to ensure a permanent, high strength bond between elastomer and fabric.