Antunes Controls 8221210034 Pressure Switch

The Antunes Controls 8221210034 is a precision-engineered Air Differential Pressure Switch designed for high-accuracy sensing in HVACR applications. Operating within a set point range of 0.05 to 1.0" W.C., this diaphragm-actuated switch is critical for monitoring filter status, proof of airflow, and pressure drop across coils. The unit features SPDT (Single Pole Double Throw) circuitry, allowing for flexible wiring configurations in both normally open and normally closed sequences. For secure plumbing into the system, it utilizes 1/4" compression fitting connections, ensuring a leak-free seal under standard operating pressures. As a reliable component for low-pressure monitoring, the model 8221210034 provides consistent electrical switching to protect blowers and heat exchangers from airflow failures. This differential pressure sensor is commonly integrated into commercial rooftop units and industrial ventilation systems where precise air pressure switch calibration is required to maintain equipment safety and efficiency.

• Precise Set Point Control: Monitoring from 0.05" to 1.0" W.C. allows for fine-tuning in low-static environments.
• Robust SPDT Switching: Offers versatility for alarm circuits or direct motor control integration.
• Secure Plumbing: The 1/4" compression fittings prevent the common vibration-induced leaks found in barb-style connections.
• Industry Durability: Built to withstand the temperature fluctuations typical of mechanical rooms and equipment enclosures.

Common Questions

Can this switch be used for both positive and negative pressure monitoring?
Yes, by utilizing the high and low ports correctly, the 8221210034 can measure differential pressure, vacuum, or positive pressure relative to atmosphere.

What is the maximum pressure rating for the diaphragm?
This switch is designed for low-pressure air applications. Exceeding the manufacturer’s surge pressure limits can rupture the internal diaphragm and cause switch failure.

Does this unit require a specific mounting orientation?
For maximum accuracy at the 0.05" W.C. threshold, the unit should be mounted vertically. Horizontal mounting may shift the set point due to the weight of the internal components.

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.