Antunes Controls JD-2-GREY Pressure Switch

The Antunes Controls JD-2-GREY Pressure Switch is a high-performance air differential pressure switch engineered for precision monitoring of pressure, vacuum, and differential air flow in industrial HVAC systems. This SPDT air sensing switch features a 0.1 to 4" W.C. range (3mm to 102mm) and utilizes a grey spring for accurate setpoint adjustment. Encased in a rugged die-cast aluminum housing, the unit incorporates a 1/8" NPT connection and a sensitive diaphragm to ensure repeatable snap-action electrical switching. As an auto reset air switch, it consistently returns to the default state as soon as pressure stabilizes, making it an essential component for interlocking safety and air flow verification in 125-250 VAC applications. Designed for veteran technicians, this unit offers a visible setpoint indicator and dual-scale calibration for straightforward field integration.

• Versatile 0.1 to 4" W.C. adjustment range via the grey spring mechanism for precise safety interlocking.
• Auto reset functionality reduces system downtime by automatically clearing once pressure limits return to the normal operating range.
• Rugged die-cast aluminum construction provides the durability required for demanding mechanical rooms and industrial environments.
• SPDT contact configuration allows for flexible wiring as a normally open, normally closed, or changeover switch.
• Sensitive diaphragm design ensures stable performance and high repeatability in low-pressure HVAC applications.

How do I adjust the setpoint on the Antunes JD-2-GREY?
Remove the hexagon cap screw at the top of the indicator stem and use a screwdriver to turn the adjusting screw. Moving the indicator down (clockwise) increases the pressure setpoint, while moving it up (counterclockwise) decreases it.

What is the maximum pressure this switch can withstand?
The JD-2 series is rated for a maximum operating pressure of 35" W.C. and can handle a maximum pressure surge of 3 PSIG without damaging the internal diaphragm.

Can this switch be used for vacuum applications?
Yes, the JD-2-GREY features dual 1/8" NPT ports, allowing it to function as a pressure, vacuum, or differential air switch depending on which port is vented or connected to the source.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.