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authorized distributors

A.J. Antunes


Marshall Wolf Automation your authorized A.J. Antunes distributor!

Please click from the air and gas pressure switches below or contact us for assistance!
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Showing 1 to 7 of 7 products.
  Name Price
Showing 1 to 7 of 7 products.
JD-2 Air Switches<br />Antunes 801111 SeriesJD-2 Air Switches
Antunes 801111 Series
Spring color available in grey, red, blue, purple or orange!
See only:SwitchesPressure Sensors and Switches
Starting at $80.85
Starting at $52.55
SMD Air Pressure Switches<BR>A.J. Antunes 8021204 SeriesSMD Air Pressure Switches
A.J. Antunes 8021204 Series
Monitor positive, vacuum or differential air pressure!
See only:SwitchesPressure Sensors and Switches
Starting at $61.95
Starting at $55.76
Gas Pressure Switches, Versa Plus<Br>AJ Antunes FGA- and FGM- SeriesGas Pressure Switches, Versa Plus
AJ Antunes FGA- and FGM- Series
Manual or automatic reset.
See only:Pressure Sensors and Switches
Starting at $72.45
Starting at $57.96
SML Air Pressure Switches<BR>A.J.Antunes 822121 SeriesSML Air Pressure Switches
A.J.Antunes 822121 Series
Detects changes in air pressure!
See only:Switches
Starting at $66.15
Starting at $59.54
SMR Air Pressure Switches<BR>A.J.Antunes 86921204 SeriesSMR Air Pressure Switches
A.J.Antunes 86921204 Series
Manual reset button and 3 range scales!
See only:Switches
Starting at $98.70
Starting at $88.83
Gas Switches, HGP/LGP-A and RHGP/RLGP-A<BR>A.J. Antunes 803112 SeriesGas Switches, HGP/LGP-A and RHGP/RLGP-A
A.J. Antunes 803112 Series
Choose manual or automatic reset! Max pressure surge 10 psi.
See only:Switches
Starting at $114.45
Starting at $103.00
Gas Switches, HGP/LGP-H or RHGP/RLGP-H<BR>A.J. Antunes Model 803113Gas Switches, HGP/LGP-H or RHGP/RLGP-H
A.J. Antunes Model 803113
Choose manual or automatic reset! Max pressure surge 35 psi.
See only:Switches
Starting at $136.50
Starting at $122.85
A.J. Antunes manufactures OEM electronic controls and air pressure switches and gas pressure switches.

The original Chicago Safety Products switch was called the Model D-1. The Model D-1 was a differential air pressure switch developed primarily for the industrial combustion market.

The D-1 air switch was used to sense air-flow across a burner. The first customer was Despatch Industries in Minneapolis Minnesota with an order for 100 switches.

Following a process of continuous improvement, the second generation of this air-flow switch was soon introduced. This model was called the JD-2.

The model was named as the second (2) generation of the differential switch (D). What does the J stand for? Always a strong family man, August Antunes used this opportunity to name this product for his children, Jim and Jane.

To compliment the air differential safety switch, gas pressure switches were soon added to the product line. These gas pressure switches are designed to sense gas pressure being supplied to a gas burner.