Servo Pressure Controllers


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.


Type 3110 and Type 3120 EP Analog Circuit Card Pressure Transducers

Type 3110 and Type 3120 EP Analog Circuit Card Pressure Transducers

Type 3110 and Type 3120 EP Analog Circuit Card Pressure Transducers from Marsh Bellofram. The Type 3110 and Type 3120 are a series of single- (3110) and double-loop (3120) electro-pneumatic analog circuit-card servo pressure transducers, designed to provide compact, high-performance, […]

Type 3111 Compact Analog Circuit Card HVAC Pressure Regulator

Type 3111 Compact Analog Circuit Card HVAC Pressure Regulator

The Type 3111 Compact Analog Circuit Card HVAC Pressure Regulator is an economical version of the Type 3100 series, expressly designed for use within these industry applications.

Type 3411 Digital Circuit Card HVAC Pressure Regulator

Type 3411 Digital Circuit Card HVAC Pressure Regulator

The Type 3411 Digital Circuit Card HVAC Pressure Regulator is expressly designed for use with spring-return air-duct cylinders in the HVAC industry.

Type 3410 and Type 3420 Digital Circuit Card OEM Pressure Regulators

Type 3410 and Type 3420 Digital Circuit Card OEM Pressure Regulators

Type 3410 and Type 3420 Digital Circuit Card OEM Pressure Regulators from Bellofram PCD The compact Type 3410 (single-loop) and Type 3420 (double-loop) Circuit-Card Pressure Regulators are perfect for size-conscious OEM’s, without sacrificing any of the high-end performance normally associated […]

Type 3210 and Type 3220 Analog Enclosure Regulators

Type 3210 and Type 3220 Analog Enclosure Regulators

Type 3210 and Type 3220 Analog Enclosure Regulators from Marsh Bellofram Corporation. Type 3210 single-loop and Type 3220 double-loop electro-pneumatic servo pressure controllers incorporate two solenoid valves and an internal pressure sensor for increased sensitivity and accuracy, housed within a […]

Type 3211 and Type 3221 Analog Enclosure Regulators

Type 3211 and Type 3221 Analog Enclosure Regulators

Type 3211 and Type 3221 Analog Enclosure Regulators from Bellofram PCD. Type 3211 single-loop and Type 3221 are double-loop pressure controllers which offer non-bleeding solenoid valve technology with an integral flow booster. This produces forward flows that are equivalent to […]

Type 3212 and Type 3222 Analog Enclosure Regulators

Type 3212 and Type 3222 Analog Enclosure Regulators

Type 3212 and Type 3222 Analog Enclosure Regulators from Marsh Bellofram Corporation. The Type 3212 single-loop and 3222 double-loop are non-bleeding electro-pneumatic controller with flows exceeding those of most compact standard industrial electronic regulators or I/P transducers.

Type 3215 Weatherproof Regulator with Super High Flow

Type 3215 Weatherproof Regulator with Super High Flow

The Type 3215 Weatherproof Regulator with Super High Flow utilizes reliable, quick-firing solenoids, an on-board pressure sensor, and a precision 180 scfm booster to achieve excellent accuracy and stability.

Type 3510 and Type 3520 Digital Enclosure Regulators

Type 3510 and Type 3520 Digital Enclosure Regulators

Type 3510 and Type 3520 Digital Enclosure Regulators from Marsh Bellofram Corporation. Marsh Bellofram Type 3510 single and Type 3520 double loop electro-pneumatic servo pressure controllers combine the advantages of reliable solenoid valves and digital control, housed in a rugged, […]

Type 3511 and Type 3521 Digital Enclosure Regulators

Type 3511 and Type 3521 Digital Enclosure Regulators

Type 3511 and Type 3521 Digital Enclosure Regulators from Marsh Bellofram Corporation. Type 3511 single- and Type 3521 double-loop digital servo pressure controllers, available with analog or digital outputs, combine all the advantages of reliable solenoid valve technology in a […]

Type 3512 and Type 3522 Digital Enclosure Regulators

Type 3512 and Type 3522 Digital Enclosure Regulators

Type 3512 and Type 3522 Digital Enclosure Regulators from Marsh Bellofram Corporation. The Type 3512 single loop and 3522 double loop are single units – integrated controller and booster. The 3512/3522 offers solenoid valve technology with forward flow exceeding those […]

Mounting Options & Accessories

Mounting Options & Accessories

To ensure the best performance capabilities of our pressure regulators and controllers, Marsh Bellofram offers a variety of directly compatible cordsets, converters, power suppliers, control knobs, external volume boosters and other accessories.