Antunes Controls 803113901 Pressure Switch

The Antunes Controls 803113901 is a precision-engineered LGP-D Low Gas Pressure Switch designed for monitoring minimum gas pressure in commercial industrial combustion systems. This manual reset pressure switch features a DPDT (Double Pole Double Throw) contact arrangement, allowing for simultaneous control of two independent electrical circuits. With an adjustable set point range of 2-14" W.C. (Water Column), this unit ensures reliable operation and safety lockout during low-pressure events. The hardware includes a 1/4" NPT bottom connection for main gas line integration and a 1/8" NPT vent connection for standard piping requirements. Built for durability in demanding mechanical rooms, the 803113901 provides NEMA 1 protection and is a drop-in replacement for systems requiring critical gas pressure monitoring. Its robust diaphragm-actuated design prevents nuisance tripping while maintaining accuracy across the entire gas pressure range, ensuring the burner identifies unsafe fuel conditions immediately.

• DPDT Contact Logic: Enables versatile wiring configurations to shut down the main gas valve while triggering an external alarm or BMS notification.
• Manual Reset Mechanism: Ensures that a low-pressure fault is manually inspected and cleared by a technician before the system resumes operation.
• Precise 2-14" W.C. Range: Provides highly accurate monitoring for low-pressure gas manifolds, preventing burner instability.
• Standardized Threading: Features heavy-duty 1/4" NPT ports for secure, leak-free installation into existing gas trains.
• Industrial Durability: Rated for reliable performance in ambient temperatures up to 140°F (60°C).

Is the Antunes 803113901 suitable for high-pressure gas applications?
No, this is a low gas pressure switch specifically calibrated for the 2-14" W.C. range. Exceeding the maximum surge pressure rating can damage the internal diaphragm.

Can this pressure switch be mounted in any orientation?
For maximum accuracy and to maintain the factory calibration, it is recommended to mount the switch in a vertical position with the conduit opening facing down.

What is the purpose of the 1/8" NPT vent connection?
The vent connection allows for the safe piping of the atmospheric side of the diaphragm to a vent line, ensuring proper operation and compliance with local mechanical codes.

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.