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Bellofram Precision Controls Division (PCD) of Marsh Bellofram designs and manufactures air and gas pressure
regulators, relays, servo pressure controllers, I/Ps and E/Ps, analog circuit card pressure transducers and
regulators, diaphragm air cylinders, FRLs, and compatible accessories for a wide variety of commercial and
Mountain Controls offers the following from Bellofram PCD:
Marsh Bellofram precision air pressure regulators provide a high level of control, accuracy, and stability with
large flow and exhaust capabilities for a variety of applications.
Type 10 Pressure Regulators
Type 110 Pressure Regulators
Type 37 Pressure Regulators
T39 Standard and Special Build Gas Regulators
Type 40 Pressure Regulators
Type 41 Pressure Regulators
Type 50 Filter Regulators
Type 51 Pressure Regulators
Type 60 and Type 65 Pre-Set Pressure Regulators
Type 70 High Flow Pressure Regulators and Type 70BP High Flow Back Pressure Regulators
Type 77 Vacuum Pressure Regulators
Type 78 High Flow Air Regulators
Type 92 Subminiature Regulators
Filters, Regulators, and Lubricators (FRLs)
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Marsh Bellofram offers several versions and types of pneumatic (air) relays to provide cost-effective,
high-performance air regulation. Among the relays they offer are positive and negative biasing, high relief,
adjustable bias, and more.
Type 20, Type 20HR, and Type 20EXHR Precision Air Relays
Extremely accurate, compact, two-stage, pilot-operated 1:1 relay with positive and negative bias
Type 72 and 72HR Positive Bias Booster Relays
Type 75 Air Relays
Type 79 High Flow Air Relays
Bellofram PCD designs and manufactures electro-pneumatic, high-precision voltage-to-pressure (E/P),
current-to-pressure (I/P), and pressure-to-current (P/I) transducers to provide process control in valves,
pneumatic relays, and flow regulators.
Type 1000 I/P and E/P Transducers
Type 1001 I/P and E/P Transducers
Type 1500 I/P and E/P Transducers
Type 2000 and Type 2000 EX I/P and E/P Tranducers
Type 5000 P/I Transducers
Marsh Bellofram offers a range of servo pressure controllers to meet the process control needs of a variety of
HVAC, industrial, medical, and OEM applications.
In addition to the servo pressure controllers listed in the table below, Marsh Bellofram offers a variety of
compatible accessories and mounting options for the equipment. For more information, see the Mounting Options and Accessories Datasheet launch and contact
us to start your order.
Type 3110 (single-loop) and Type 3120 EP (double-loop) Analog Circuit-Card Regulators
Type 3111 Compact Analog Circuit Card HVAC Pressure Regulators
Type 3411 Digital Circuit Card HVAC Pressure Regulators
Type 3410 and Type 3420 Digital Circuit Card OEM Pressure Regulators
Type 3210 (single-loop) and Type 3220 (double-loop) Analog Weatherproof Enclosure Regulators
Type 3211 (single-loop) and Type 3221 (double-loop) Analog Enclosure Regulators
Type 3212 (single-loop) and Type 3222 (double-loop) Analog Weatherproof Enclosure Regulators
Type 3215 Weatherproof Regulator with Super High Flow
Type 3510 (single-loop) and Type 3520 (double-loop) Digital Enclosure Regulators
Type 3511 (single-loop) and Type 3521 (double-loop) Digital Enclosure Regulators
Type 3512 (single-loop) and Type 3522 (double-loop) Digital Weatherproof Enclosure Regulators
The Marsh Bellofram Group of Companies offers three different types of diaphragm air cylinders: standard,
super, and small bore. They require no lubrication, are virtually frictionless, and economical for uses such
as lifting, clamping, pushing, coining, turning, and other linear force or actuation motions in a variety of
These diaphragm air cylinders can be used with vacuum and gaseous pressure systems, and are often used as the
following: expansion chambers, accumulators, pumps, reservoirs, shock mounts, impact absorbers, weld drivers,
tensioners, dancer rolls, valve actuation, and louver controls.
For more information about Bellofram's line of diaphragm air cylingers, see the Diaphram Air Cylinders Datasheet launch and contact us to
start your order.
Bellofram standard needle valves are offered in several styles and materials, and are applicable to
instrumentation, process plants, oil and gas production, and general applications that require isolation and
For more information, see the Bellofram Needle Valve Datasheet launch and contact us to
start your order.