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    3/8 Inch Proportional Electric Air Pressure Regulator, 50~9000 mbar

    5 out of 5 based on 1 reviews | Write a review
    Buy air pressure regulator with affordable price, pressure regulating range 50~9000 mbar (130.5 psi), max flow 1500L/min, working voltage DC 24V, optional input signal current 4~20mA or voltage DC 0~10V, analog/switch output, connection hose port 3/8 inch. Electronic air pressure regulator valve in proportional adjustment, ideal for pneumatic control system.
    SKU: ATO-PPPR-9038
    30-day Returns
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    Delivery date: 6-12 days

    Proportional air pressure regulator has electronic digital display. Working pressure range 50~9000 mbar (max 130.5 psi), rated voltage DC 24V, current/voltage signal input, analog/switch output, hose port 3/8”. The proportional pneumatic regulator is an air pressure valve, which can save the cost of multiple pressure reducer valves or hydraulic valves in pneumatic control system.


    Model ATO-NITV205
    Minimum supply pressure Set pressure + 1000 mbar (+0.1 MPa)
    Maximum supply pressure 10000 mbar (1 MPa)
    Set pressure range 50~9000 mbar (0.005 to 0.9 MPa )
    Max. Flow 1500L/min
    Power supply Voltage DC 24V ± 10%, DC 12~15V
    Current consumption Power supply voltage DC 24V type: 0.12 A or less
    Power supply voltage DC 12~15V type: 0.18 A or less
    Input signal Current type *Note 1 DC 4~20mA, DC 0~20mA (Sink type)
    Voltage type DC 0~5V, DC 0~10V
    Preset input 4 points (Negative common), 16 points (No common polarity)
    Input impedance Current type 250 Ω or less *Note 4
    Voltage type Approx. 6.5 kΩ
    Digital input Power supply voltage DC 24V type: Approx. 4.7 kΩ.
    Power supply voltage DC 12V type: Approx. 2.0 kΩ
    Output signal (monitor output) *Note 2 Analog output DC 1~5V (Output impedance: Approx. 1 kΩ)
    DC 4~20mA (Sink type) (Output impedance: 250 Ω or less) Output accuracy ± 6% F.S. or less
    Switch output NPN open collector output: Max. 30V, 80mA PNP open collector output: Max. 80mA
    Linearity ± 1% F.S. or less
    Hysteresis 0.5% F.S. or less
    Repeatability ± 0.5% F.S. or less
    Sensitivity 0.2% F.S. or less
    Temperature characteristics ± 0.12% F.S./ ℃ or less
    Output pressure display *Note 3 Accuracy ± 2% F.S. ± 1 digit or less
    Minimum unit Mpa: 0.001, kgf/cm2: 0.01, bar: 0.01, psi: 0.1, kPa: 1
    Ambient and fluid temperature 0 to 50℃ (No condensation)
    Enclosure ip65
    Port size 3/8 inch, 1/4 inch
    Weight 350 g (without options)


    1. 2-wire type 4 to 20 mA DC is not available. Power supply voltage (DC 24V or DC 12~15V) is required.
    2. Select either analog output or switch output. Further, when switch output is selected, select either NPN output or PNP output. When measuring NITV analog output from 1 to 5 VDC, if the load impedance is less than 100 kΩ, the analog output monitor accuracy of within ±6% (full span) may not be available. The product with the accuracy of within ±6% is supplied upon your request. Output pressure remains unaffected.
    3. Adjustment of numerical values such as the zero/span adjustment or preset input type is set based on the minimum units for output pressure display (e.g. 10~5000 mbar). Note that the unit cannot be changed.
    4. Value for the state with no over current circuit included. If an allowance is provided for an over current circuit, the input impedance varies depending on the input current. This is 350Ω or less for an input current of 20mA DC.


    1. Proportional electric air pressure regulator adopts electrical proportional method to achieve stepless control of outlet pressure. It can realize remote control and program control.
    2. Compared with hydraulic proportional valves, proportional pressure regulators are small in size, light in weight, compact in structure, light in weight and low in cost.
    3. The control of proportional pressure regulator is continuous control, and its characteristic is that the output quantity changes with the change of input quantity (current value or voltage value), and there is a certain proportional relationship between the output and input.
    4. Proportional air  pressure regulator has many types, which can be used with various electrical equipment and computers to control various electro-hydraulic systems. High control precision, flexible installation and strong anti-pollution ability.

    50~9000 mbar Air Pressure Regulator Dimensions (Unit: mm)

    • Proportional Air Pressure Regulator with Flat Bracket*

    Dimensions of 50~9000 mbar 3/8 inch Proportional Pressure Regulator with Flat Bracket

    • Proportional Air Pressure Regulator with L-Shape Bracket*

    Dimensions of 50~9000 mbar 3/8 inch Proportional Pressure Regulator with L-shape bracket

    *Note: The bracket is the option.

    Tips: Structural principle of air pressure regulator.

    The input signal of proportional pressure regulator increases, the solenoid pilot valve for air supply reverses, and the solenoid pilot valve for exhaust is in the reset state, the air supply pressure enters the pilot chamber from the SUP port through the pilot valve. The pressure in pilot chamber rises, and the air pressure acts on the top of the diaphragm. At this time, the air supply valve core connected to the diaphragm is opened, and the exhaust valve core is closed, generating output pressure. This output pressure is fed back to the control loop through pressure sensor. The output pressure is quickly compared and corrected with the target value until the output pressure is proportional to the input signal, so that the output pressure changes proportional to the change of the input signal.

    Existing reviews of 3/8 Inch Proportional Electric Air Pressure Regulator, 50~9000 mbar
    The pressure regulator does exactly what it's designed to do.
    It is a high quality product. I have been using the proportional pressure regulator about 3 months full time with no issues. I highly recommend it. The pressure regulator does exactly what it's designed to do.
    From: Joe | Date: 05/05/2022
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