Antunes Controls 803112504 Pressure Switch

The Antunes Controls 803112504, part of the LGP-A series, is a reliable manual reset low gas pressure switch designed for critical monitoring in industrial and commercial combustion systems. Engineered to protect against unsafe pressure drops, this SPDT gas pressure switch features an adjustable set point range of 10-50" W.C., ensuring high-precision safety interlocking for gas-fired equipment. The rugged die-cast aluminum housing provides industrial-grade durability, while the 1/4" NPT bottom connection and 1/8" NPT vent simplify integration into existing manifolds. As a manual reset pressure switch, it prevents automatic equipment restarts after a fault, requiring a technician to verify system integrity before operation. This Antunes LGP-A 803112504 is essential for compliance in systems requiring low gas pressure safety limits, offering a maximum surge pressure of 10 PSI and reliable performance in temperatures ranging from -40°F to 140°F.

Key Benefits

• Precision Safety: Monitors low gas pressure conditions with an adjustable 10" to 50" W.C. range.
• Industrial Durability: Housed in a rugged die-cast aluminum enclosure for long-term reliability in demanding environments.
• Contractor-Friendly Installation: Features standard 1/4" NPT inlet and 1/8" NPT vent ports for straightforward piping.
• Manual Reset Security: Ensures deliberate manual intervention after a pressure drop event, preventing unsafe automatic cycling.
• High Compatibility: Integrated SPDT contacts (Single-Pole Double-Throw) allow for flexible wiring into various safety control circuits.

Common Questions

How do I know if the switch has tripped?
The Antunes 803112504 features a visible reset button/lever. If the gas pressure falls below your designated set point, the internal diaphragm trips the switch, and the reset button will indicate the "off" position. It must be manually depressed once pressure is restored above the set point.

Can this switch be mounted in any orientation?
For optimal performance and to maintain calibration accuracy, these gas pressure switches should be mounted horizontally with the 1/4" NPT inlet stem facing down. While they do not require perfectly level mounting, vertical orientation can affect diaphragm sensitivity.

What is the maximum pressure this switch can handle?
While the operating set point is limited to 50" W.C., the unit is designed to withstand a maximum surge pressure of 10 PSI without damaging 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.