Antunes Controls 803112501 Pressure Switch

The Antunes Controls 803112501 is a high-performance LGP-A Low Gas Pressure Switch designed for precise monitoring of combustible gases in industrial and commercial burner systems. This manual reset SPDT pressure switch features an adjustable set point range of 1-6" W.C., ensuring critical safety shut-off when pressure drops below the required threshold. Built for reliability in demanding environments, the unit includes a standard 1/4" NPT connection for the primary gas line and a 1/8" NPT vent. The rugged die-cast aluminum housing protects internal components, while the manual reset mechanism ensures a technician must inspect the system before resuming operation after a low-pressure event. This switch is commonly utilized in grain dryers, heaters, and industrial ovens where consistent gas pressure monitoring is vital for combustion efficiency and equipment safety. It is compatible with natural gas, propane, and butane, making it a versatile component for commercial HVACR maintenance and boiler field repairs.

• Adjustable Range: Precise 1-6" water column set point for tailored system protection.
• Manual Reset Safety: Prevents automatic restarts until the fault condition is manually cleared.
• Versatile Compatibility: Designed for use with air, natural gas, and LP gas applications.
• Durable Construction: Heavy-duty housing withstands high-temperature burner environments.
• Integrated Venting: 1/8" NPT vent connection simplifies installation and piping requirements.

Can the 803112501 be used for high-pressure sensing?
No, this is a low gas pressure switch calibrated specifically for the 1-6" W.C. range. For high-pressure safety limits, an HGP-A series switch should be used.

What is the purpose of the 1/8" NPT vent connection?
The vent allows for the safe discharge of gas in the event of a diaphragm rupture and must be piped according to local mechanical codes.

Does this switch require a specific mounting orientation?
For maximum accuracy and to maintain the calibrated set point, it is recommended to mount the switch with the diaphragm in a vertical position.

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.