Antunes Controls 8021204014 Pressure Switch

The Antunes Controls 8021204014 Pressure Switch is a high-precision air differential pressure switch engineered for critical HVACR and energy management proving circuits. As a veteran-grade SMD Series model, it features a versatile set point range of 0.17 to 6.0" W.C., making it an essential component for monitoring fan proving, filter status, and combustion air pressure. This unit utilizes a snap-acting SPDT switch (Single Pole Double Throw) configuration, allowing for seamless integration into both positive and negative pressure systems. Built for the rigors of the field, it includes 1/4" barb sample line connections for easy tubing attachment and a protective cover to shield terminal connections from environmental interference. With a maximum pressure rating of 20" W.C. and a wide operating temperature range of -40°F to 170°F, this OEM Antunes part ensures reliable signal actuation across standard commercial and industrial air handling applications. Contractors can rely on its auto-reset functionality for consistent performance in high-demand mechanical systems.

Key Benefits

• Precise Pressure Range: Field-adjustable set point from 0.17" to 6.0" W.C. for accurate air sensing.
• Rugged Reliability: Durable construction designed for commercial HVAC proving and energy management systems.
• Versatile Compatibility: Integrated 1/4" barb fittings allow for quick connection to standard pneumatic diagnostic lines.
• Enhanced Safety: Included terminal cover protects electrical leads from dust and debris in mechanical rooms.
• Bimodal Functionality: Supports positive, negative, and differential air pressure monitoring.

Common Questions

How do I adjust the set point on the 8021204014 pressure switch?
To adjust the trip point, remove the protective cover and use a flathead screwdriver to turn the internal adjustment screw. Rotate clockwise to increase the pressure threshold and counter-clockwise to decrease it according to your differential pressure requirements.

Does this switch support manual or automatic reset?
The Antunes 8021204014 features an auto-reset design, meaning the switch will automatically revert to its resting position once the sensed air pressure falls below the set switching differential.

Can this be used for both positive and negative pressure sensing?
Yes, this SPDT air pressure switch is designed to sense differential, positive, or negative (vacuum) pressure depending on which 1/4" barb port is utilized in the installation.

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.