Air / Process Gas Pressure 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.


T37 Regulator

T37 Regulator

The Type 37 regulator is specifically designed for applications that require large flow capability and accurate pressure control. This regulator offers low droop, high accuracy, and fine adjustment sensitivity.

T39 Air Pressure Regulator

T39 Air Pressure Regulator

The Bellofram T39 regulator selection is the largest of its type in the industry. We offer this regulator in three different materials, one of which will ideally suit your application AND your budget. ALL of the T39 regulators are offered […]

T40 Adjustable Air Pressure Regulator

T40 Adjustable Air Pressure Regulator

The Type 40 is a reliable adjustable air pressure regulator, designed for instrumentation and general purpose use.

T50 and T50 NACE Regulators

T50 and T50 NACE Regulators

The Marsh Bellofram Type 50 & Type 50 NACE are reliable, precision filter air set pressure regulators, designed for instrumentation and general purpose use in both standard (Type 50) and corrosive environments (Type 50 NACE).

T51 Precision Air Regulators

T51 Precision Air Regulators

Type 51 Precision Air Regulators offers a high-performance in a compact, low-cost package, offering output pressure ranges to 100 psig; 6.9 BAR (120 psig; 8.3 BAR in T-51FR Corrosive Tec & T51FRWT).

T51 Stainless Steel Regulators

T51 Stainless Steel Regulators

The Type 51SS regulator is designed for service with a variety of corrosive gases and environments and comply with NACE MR-01-75.

T60 Air Regulators

T60 Air Regulators

Type 60 Air Regulators are reliable precision units designed for instrumentation and general purpose use. The Type 60 is a preset, fixed-pressure unit with a dripwell.

T65 Air Pressure Regulators

T65 Air Pressure Regulators

Bellofram’s T65 Air Regulators are reliable precision units designed for instrumentation and general purpose use. The Type 65 is a preset, fixed-pressure unit without a dripwell (Dripwell unit available as T60).

T70 Air Pressure Regulator

T70 Air Pressure Regulator

The Marsh Bellofram Type 70 air pressure regulator is expressly designed for applications requiring substantial flow capacity of up to 80 SCFM (2250 LPM) and accurate pressure controls.

T70BP Back Pressure Air Regulator

T70BP Back Pressure Air Regulator

The Type 70BP back pressure air regulator is a high-flow, high-precision pneumatic relief valve with adjustable set point. It is expressly designed for applications requiring high flow capacity and accurate pressure controls.

T77 Vacuum Regulator

T77 Vacuum Regulator

The Bellofram T77 Vacuum Regulator incorporates a fixed negative 15 psig bias spring to maintain vacuum outputs up to 29″ Hg. An adjustable opposing range spring increases controlled pressure outputs up to 150 psig.

T78 Direct-acting, High-performance Air Pressure Regulator

T78 Direct-acting, High-performance Air Pressure Regulator

The Marsh Bellofram Type 78 is a direct-acting, high-performance air pressure regulator designed to offer high-accuracy, large flow and exhaust capabilities within OEM and industrial applications.

T95H Direct Operating Pressure Regulator

T95H Direct Operating Pressure Regulator

The T95H is a direct operating pressure reducing regulator with large capacity. Ideally suited for uses in oil and gas, process gases, steam and liquids. Available in three spring ranges and metal or elastomer diaphragm and orifice seat materials.

T98H Back Pressure Regulator

T98H Back Pressure Regulator

The T98H monitors upstream pressure and opens to relieve excess pressure increases above setpoint. As an industrial steam, water and process liquid Back Pressure Regulator, the upstream pressure is monitored and released downstream when the setpoint is exceeded.

T119 Control Valve

T119 Control Valve

The T119 Control Valve is versatile and can be used for on-off or throttling service.

T289 Back Pressure Regulator

T289 Back Pressure Regulator

The T289 Back Pressure Regulator functions as a high flow relief valve with an adjustable set point.

T600 Direct Operated Pressure Reducing Regulator

T600 Direct Operated Pressure Reducing Regulator

The Bellofram T600 series is a direct operated, pressure reducing regulator that can be used as a pressure loaded regulator, switching valve, or monitoring regulator.

T627 Direct Operated Regulator

T627 Direct Operated Regulator

The T627 is a spring loaded, direct-operated regulator for both low and high pressure applications in the oil and gas industries.

R627 Relieving Regulator

R627 Relieving Regulator

The TR627 Relieving Regulator has an internal relief valve that provides protection against over pressurization.

T1808 Pilot Operated Relief Valve

T1808 Pilot Operated Relief Valve

The T1808 pilot-operated relief valve or back pressure regulator is used in gas or liquid service to maintain pressure on oil and gas separators, and in pressure relief applications in industrial gas distribution systems. The function of the T1808 is […]

M1 & M2 Miniature Air Regulators

M1 & M2 Miniature Air Regulators

The M1R & M2R Miniature Air Regulators is a compact, low cost regulator, operating in output pressure ranges up to 120 psi, with a maximum supply pressure of 145 psi.