Bellofram Precision Controls Marsh Bellofram Group of Companies


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Bellofram Precision Controls Division (PCD)

Bellofram Precision Controls designs and manufactures products that excel in environments where high performance, long service life, and accuracy are critical. Air and gas pressure regulators offer precision control, high accuracy, and maximum stability even under rigorous conditions. Pneumatic relays offer cost-effective, high performance air regulation across a variety of applications. Other products include Servo pressure controllers, I/P's and E/P's, analog circuit card pressure transducers and regulators, FRL's and related accessories.

Air Pressure Regulators

Air Regulators Literature

Type 10 Air Pressure Regulator with 0.1% AccuracyType 41 Precision Air Pressure RegulatorType M1R & Type M2R Low-cost Miniature Air Regulators

Direct-acting, high-performance Marsh Bellofram air pressure regulators offer precision control, high-accuracy, maximum stability, large flow and exhaust capabilities to support even the most challenging OEM and industrial applications.


Pneumatic (Air) Relays

Air Relays & Volume Boosters

Type 20 Precision Pneumatic (Air) RelayType 75 & Type 75HR Pneumatic (Air) RelaysType 79 High Flow & Type 79HR Precision Air Relays

Marsh Bellofram pneumatic relays are designed to provide cost-effective, high-performance air regulation across a variety of applications, and in support of a variety of market requirements. Available versions and types include two-stage, pilot operating 1:1; positive and negative biasing, positive bias booster, high relief, adjustable bias, and ratio high-flow relays, all of which provide highly accurate and reliable output pressure control.



PCD Transducers Literature

Type 1001 I/P & E/P TransducersType 1000 I/P & E/P TransducersType 1500 I/P & E/P Transducers

Electro-pneumatic transducers are used to convert current or voltage input signals to proportional output pressures. They are used for process control in valves, pneumatic relays and flow regulators. The PCD division of Marsh Bellofram designs and manufactures high-precision voltage-to-pressure (E/P), current-to-pressure (I/P), and pressure-to-current (P/I) transducers for a variety of industrial and OEM applications.


Servo Pressure Controllers

Type 3000 Literature

Type 3110 & Type 3120 E/P Analog Circuit Card Pressure TransducersType 3210 & Type 3220 Analog Enclosure RegulatorsType 3215 Weatherproof Regulator with Super High Flow

Type 3000 I/Ps & E/Ps

T2200 Servo Pressure Controller

Type 2200 - T2200 Electric-Pneumatic Control Valves

T3700 Servo Pressure Controller

Type 3700 - T3700 Proportional Pressure Regulator

Marsh Bellofram designs and manufactures a complete line of servo pressure controllers, including both traditional and analog circuit card models, to suit a variety of OEM, industrial, HVAC and medical device and equipment process control applications.

The T2200 series direct operated poppet valves are compact in size, provide large flow capacity and low power consumption. The T2200 valve is a single valve, multi ported for 2 way and 3 way operation. Options include standard and continuous operation, standalone use or manifold and flying leads or DIN terminal. The manifold mounted valve can be easily operate through ethernet or PLC control in robotics and automation installations.

  • On / Off or Continuous operation
  • Energy saving design
  • Clutches/brakes
  • Paper handling
  • Cylinder operations
  • Robotic control
  • Automation systems

The T3700 Proportional Pressure Regulator features an LED display for easy output pressure monitoring and offers fast response times for optimal performance. With a high flow rate, it ensures seamless operation and maintains output pressure even during power loss.


  • Tension control applications
  • Glue proportioning
  • Spot welding
  • Control of speed, force, and torque
  • Zero weighing balancer
  • Position control
  • Fluid coating and many more!

Diaphragm Air Cylinders

Air Cylinders Literature

Bellofram Small Bore Diaphragm Air CylindersSuper Air CylindersStandard Diaphragm Air Cylinders

Marsh Bellofram diaphragm Air Cylinders are actuators made from elastomers, engineered metals and fabrics. They require no lubrication and are virtually frictionless and economical. They can be used to provide lifting, clamping, pushing, coining, turning and other linear force or actuation motions in many applications.


Filter Regulator Lubricator

Bellofram FRLs Literature

2023 Filter, Regulator, Lubricator Assemblies (FRLs)
2023 FRLs


2018 Filter, Regulator, Lubricator Assemblies (FRLs)
2018 FRLs

Marsh Bellofram Filter-Regulator-Lubricators (FRLs) feature modular design to eliminate fittings between components and save space. These devices are available in multiple sizes ranging from 1/8" to 1" NPT with varying flow rates by size/series, four filter variants ranging from 5 to 50 micron and hand adjustable drip rates. Marsh Filter Regulator Lubricator systems are ideal for cost effective treatment of compressed air.

  • Modular design for service & interchangeability.
  • Non-rising adjustment knob with push-pull lock ring feature.
  • Small package size and lightweight construction.
  • Lubricators feature polycarbonate bowls, with field-settable dials providing variable lubrication between 0 and 90 drips per minute.
  • Filter Regulators have the same features as the regulators with the addition of polycarbonate bowls, 5 or 50 micron filters, and with manual, semi-automatic or automatic drains.
  • Pneumatic Systems
  • Air Preparation and filtration
  • Industrial tooling, machinery and equipment

Bellofram Accessories

Accessories Literature

D3870 Series 6-Digit Frequency Input Indicator/TotalizerDigital Pressure Indicator

Digital Pressure Indicator
The Marsh Instruments Digital Pressure Indicator is portable, lightweight, hand-held testing and calibrating instrument that indicates pressure to 50 psig at accuracy levels of ±0.25% of reading ±1 count.

D3870 Series 6-Digit Frequency Input Indicator/Totalizer
The Digitec D3870 provides fast, accurate measurements even with very low frequent inputs (as low as one pulse per 100 seconds).

PCD Precision Controls Division Marsh Bellofram Bellofram PCD

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