Antunes Controls 8021202056 Pressure Switch

The Antunes Controls 8021202056 (SMD Series) is a high-precision air differential pressure switch engineered for critical proving applications in HVAC and energy management systems. This SPDT air pressure switch features a versatile sensing range of .17-1" W.C., providing reliable monitoring of positive, negative, or differential air pressure. Built with a rugged sheet metal housing and a sensitive diaphragm, it ensures accurate setpoint indication and repeatable performance even in demanding environments. The unit includes a 1/4" male NPT bottom connection for main pressure sensing and a 1/8" female NPT sample line connection for precise air sampling. With electrical ratings up to 10A at 125 VAC and an operating temperature range of -40°F to 170°F, this adjustable air pressure switch is a standard choice for technicians requiring a durable limit control switch for fan proving, filter monitoring, or combustion safeguard systems.

• Field Adjustable Range: The .17" to 1.0" W.C. setpoint is easily calibrated with a standard screwdriver to meet specific system requirements.
• Versatile Ports: Features a 1/4" NPT bottom inlet and 1/8" NPT sample line connections to simplify integration into existing HVAC pressure monitoring setups.
• Extreme Durability: Rated for a maximum surge pressure of 20" W.C., protecting the internal diaphragm from sudden system spikes.
• Standardized Mounting: Designed with standard #8 screw holes for quick installation in vertical or horizontal orientations.

Can the Antunes 8021202056 sense vacuum pressure?
Yes, the SMD series is designed to monitor positive, vacuum (negative), or true differential pressure, making it ideal for exhaust fan proving and suction line monitoring.

What is the maximum electrical load for this switch?
This SPDT switch is rated for 10A at 125 VAC, 8A at 250 VAC, and 1/8 HP at 125 VAC, suitable for most pilot duty and motor control circuits.

Does this switch require specific mounting?
While it can be mounted in multiple positions, the factory recommends vertical mounting for the most accurate setpoint calibration as the diaphragm weight can affect sensitivity in other orientations.

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.