Antunes Controls 804111706 Pressure Switch

The Antunes Controls 804111706 (Model HLGP-A) is a rugged, dual-function high-low gas pressure switch engineered for interlocking safety in industrial burner systems, boilers, and commercial HVACR applications. This manual reset gas pressure switch features 2-SPDT (Double-Pole Double-Throw) electrical contacts to ensure positive circuit interruption when gas pressures deviate from specified setpoints. The high-side range is adjustable from 10-50" WC, while the low-side range monitors 2-14" WC, providing critical protection against both over-pressure and under-pressure conditions in the gas train.

Constructed with a heavy-duty die-cast aluminum housing, this switch is built for harsh mechanical rooms and can be mounted horizontally without requiring precise leveling. It includes a 3/8" NPT high-pressure connection, a 1/8" NPT low-pressure connection, and a standard 1/8" NPT vent. Task-specific for combustion safety control, the 804111706 utilizes a clear setpoint scale and includes a reset lever that requires deliberate manual intervention after a trip, ensuring an technician can inspect the system before restarting operations.

• Dual Pressure Monitoring: Consolidates high (10-50" WC) and low (2-14" WC) safety limits into a single, compact HLGP-A unit.
• Secure Manual Reset: Prevents automatic recycling after a fault, requiring a manual restart to maintain industrial combustion safety.
• High Amp Rating: Highly versatile 2-SPDT electrical configuration rated for 10A at 125 VAC or 5A at 250 VAC.
• Durable Infrastructure: Withstands a maximum surge pressure of 10 PSI and operates in temperatures ranging from -40°F to 140°F.
• Standard Piping: Features NPT threaded inlets for straightforward integration into existing gas lines.

Common Questions

Does this switch require a specific mounting orientation?
The HLGP-A series is designed to be mounted horizontally and does not require accurate leveling for precise pressure detection.

What is the difference between a reset and a recycle switch?
This manual reset model will lock out until a technician physically pushes the reset lever. A recycle model would automatically close the circuit once pressure returns to the setpoint.

Can I use this for both natural gas and propane?
Yes, Antunes gas pressure switches are typically compatible with natural gas, LP gas, and air, provided the setpoints are properly calibrated for the specific fuel type.

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.

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