Crossroads Industrial Services


Alternate Part Number: 
801111303 JD-2 RED
In stock
Air Switch, 801111303 - Red Spring .1-24" w.c. , 3-600mm/w.c., AJ Antunes
This pricing is available only while stock lasts, stock up now!

Please note that effective June 21, 2017 Antunes Controls sold their pressure switch line to Crossroads Industrial Services.

Our compact, sensitive Antunes JD-2 switches are made of rugged die-cast aluminum and feature adjustable set point, set-point indication and visible on/off indicator.

The Antunes JD2 series is available in five range scales and give you accuracy and reliability.

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.

More Information
Part Number JD2 RED
Alternate Part Number 801111303 JD-2 RED
Product Series JD2 Air Switches
Availability Standard Stock
Weight - lbs. 1.0000
Base Unit of Measure Each

Automatic reset

Available in Blue, Grey, Red, Purple or Orange springs

  • JD-2 Grey, .1-4" w.c. (801111302)
  • JD-2 Red, .1-24" w.c. (801111303)
  • JD-2 Blue, .07-1.7" w.c. (801111301)
  • JD-2 Purple, .1-10" w.c. (801111310)
  • JD-2 Orange, 5-35" w.c. (801111315)

Differential - Vacuum - Pressure

Max. pressure surge: 3 psi

Max. ambient temperature: 140°F/60°C

Min. ambient temperature: -40°F/-40°C

Dimensions: 4.02" diameter, 4"D x 5"H

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