Pressure Control Valves
Proportion-Air, Inc. is the pneumatic industry leader in manufacturing electronic air pressure control valves. Whether you need a high pressure regulator for bottled gasses, a low pressure regulator for inches of water column, a precision pressure regulator for lab or medical grade applications, or even an oxygen regulator cleaned and compatible for oxygen service. Proportion-Air has a family of air pressure regulators right for you.
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QB1 Electronic pressure regulator
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Proportional pressure control from vacuum to 500 psig
QB1 is a low flow precision pressure regulator
QB2 couples to a variety of pressure reducing valves
Most versatile line of pressure control valves
Mounting position and vibration insensitive
MORE ON THE QB1 ELECTRONIC PRESSURE REGULATOR
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DQB1 Electro-pneumatic Pressure Control Valve
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QB1T with LED Digital Display
Control pressure ranges from vacuum to 300 psig
Small and compact package
Standard 0-10Vdc analog monitor output, 4-20mA optional
IP65 Housing
Proportion-Air's most versatile electro-pneumatic pressure control valve product
Unaffected by mounting position or vibrations
Doesn’t consume air in steady state which reduces operating expense
Variety of command signal options
MORE ON THE DQB1 ELECTRO-PNEUMATIC PRESSURE CONTROL VALVE
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QB2 closed loop pressure control valve
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DQB2 Electro-pneumatic Pressure Control Valve
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QB2T with Digital Display
Control pressure ranges from vacuum to 300 psig
Small and compact package
Standard 0-10Vdc analog monitor output
IP65 Housing
40 micron filter included (FPP-1)
Unaffected by mounting position or vibrations
Doesn’t consume air in steady state which reduces operating expense
Variety of command signal options
MORE ON THE DQB2 ELECTRO-PNEUMATIC PRESSURE CONTROL VALVE
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QB3 High Flow Electro-Pneumatic Pressure Control Valve
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DQB3 Pressure Control Device with Digital Display
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Proportional control valve with pressure control ranges of full vacuum through 150 psig
Integral pressure reducing valve for high forward and relief flows
Vacuum regulator model available
Oxygen regulator model available
0-10Vdc and/or 4-20mA signals
MORE ON THE DQB3 PRESSURE CONTROL DEVICE WITH DIGITAL DISPLAY
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QB4 High Flow Control Valve
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The QB4 closed loop electronic pressure regulator can handle flow rates as high as 200 scfm forward flow and 300 scfm exhaust flow. It works with pressures from vacuum to 150 psig. The unit is made up of two solenoid valves, an internal pressure transducer and an electronic control circuit mounted to an integral volume booster.
MORE ON THE QB4 HIGH FLOW CONTROL VALVE
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QL3 High Resolution Pressure Control Valve
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The QL3 allows high volumes of air to move quickly and precisely at pressures up to 150 psig using proportional solenoid valves with a unique analog PID circuit. Ideal for use with flow meters, it provides high resolution and smooth pressure control at high and low flow rates and avoids the “steps” prevalent in most feed and bleed I/P’s. The output is proportional to the electrical input or command signal.
MORE ON THE QL3 HIGH RESOLUTION PRESSURE CONTROL VALVE
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QB3H Electronic Pressure Regulator
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High pressure regulator for control up to 500 psig
Available as an oxygen regulator with brass regulator body
Integral air pressure regulator for high forward and relief flowsStainless steel internal pressure sensor for closed loop pressure control
MORE ON THE QB3H ELECTRONIC PRESSURE REGULATOR
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RS232 and RS485 Serial Communication For Electro-Pneumatic Contr
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Proportion-Air is pleased to introduce electro-pneumatic pressure control and flow control valves equipped with the Modbus Serial bus. The serial communications capability is now available on the popular QBT, QPV, and QB3 series of pressure control valves which operate as Modbus slaves. The Proportion-Air valves have the following advantages.
MORE ON THE RS232 AND RS485 SERIAL COMMUNICATION FOR ELECTRO-PNEUMATIC CONTR
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ISF1 Intrinsically Safe Pressure Control Valve
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ISQB1 Intrinsically Safe Pressure Control Valve
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GP1 1000 psi High Pressure Regulator
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Electronically controlled precision pressure regulator
Control pressure from vacuum through 1000 psi without a ratio amplifier
0-10Vdc and/or 4-20mA inputs and pressure sensor outputs
High pressure controller is IP65 rated and field serviceable
MORE ON THE GP1 1000 PSI HIGH PRESSURE REGULATOR
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GP2 1000 psi High Pressure Regulator
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Electronically controlled precision pressure regulator
Control pressure from vacuum through 1000 psi without a ratio amplifier
0-10Vdc and/or 4-20mA inputs and pressure sensor outputs
High pressure controller is IP65 rated and field serviceable
MORE ON THE GP2 1000 PSI HIGH PRESSURE REGULATOR
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BB1 Electro-Pneumatic Pressure Control Valve
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Pressure control ranges vacuum through 300 psig
Larger canister allows custom options including digital or analog signals, status LED's, TTL diagnostics, connector options, and integral RF filtration
Couple to an air pressure regulator to use as a high flow vacuum regulator
MORE ON THE BB1 ELECTRO-PNEUMATIC PRESSURE CONTROL VALVE
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BB2 Electro-Pneumatic Pressure Control Valve
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Pressure control ranges vacuum through 300 psig
Larger canister allows custom options including digital or analog signals, status LED's, TTL diagnostics, connector options, and integral RF filtration
Couple to an air pressure regulator to use as a high flow vacuum regulator
MORE ON THE BB2 ELECTRO-PNEUMATIC PRESSURE CONTROL VALVE
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MM1 OEM Pressure Control Valve
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Proportionally control pressure from vacuum through 300 psig with an electronic signal
DIN rail, panel Mount, or sub-base manifold mounting option
Common supply port on sub-base manifold for easy plumbing
Jumper selectable command 0-10Vdc or 4-20mA Adjustable deadband allows field tuning of system stability Internal pressure sensor used for closed loop pressure control Proportion-Air's OEM model pressure reducing valve
MORE ON THE MM1 OEM PRESSURE CONTROL VALVE
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MM2 OEM Pressure Control Valve
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Proportionally control pressure from vacuum through 300 psig with an electronic signal
DIN rail, panel Mount, or sub-base manifold mounting option
Common supply port on sub-base manifold for easy plumbing
Jumper selectable command 0-10Vdc or 4-20mA Adjustable deadband allows field tuning of system stability Internal pressure sensor used for closed loop pressure control Proportion-Air's OEM model pressure reducing valve
MORE ON THE MM2 OEM PRESSURE CONTROL VALVE
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