Antunes Controls 804111703 Pressure Switch

The Antunes Controls 804111703 (Model HLGP-A) is a heavy-duty, dual-function gas pressure switch designed for single point monitoring of both high and low gas pressure conditions in commercial burners and industrial oven gas trains. This manual reset pressure switch integrates two SPDT (Single Pole Double Throw) switches within a rugged die-cast aluminum housing, ensuring reliable safety interlocking for HVACR and combustion safeguard systems.

The high-side setpoint range is adjustable from 10-50" W.C., while the low-side monitors 1-6" W.C.. For seamless integration into existing gas trains, the unit features a 3/8" NPT high pressure connection (bottom), a 1/8" NPT low pressure connection (side), and a 1/8" NPT vent. Engineered for demanding environments, it maintains a maximum surge pressure of 10 PSI and operates within an ambient temperature range of -40°F to 140°F. This HLGP-A gas pressure switch is UL listed, CSA certified, and FM approved, making it a standard choice for contractors requiring precise combustion safety control and pressure fault protection.

Key Benefits

• Dual-Action Monitoring: Combines high and low pressure sensing in one compact unit to save on wiring and installation space.
• Enhanced Safety: The manual reset mechanism ensures the system requires a deliberate operator check following a pressure fault.
• Versatile Compatibility: Standard NPT threading and SPDT electrical ratings (10A @ 125 VAC) support a wide array of gas-fired equipment.
• Durable Construction: The metallic, weather-resistant housing handles high-ambient temperatures and industrial vibrations without losing calibration.
• Flexible Mounting: Designed for horizontal mounting with the inlet stem down; does not require pinpoint leveling for accurate operation.

Common Questions

What is the difference between the HLGP-A manual reset and recycle models?
The 804111703 is a manual reset model, meaning if the pressure exceeds the high limit or drops below the low limit, the switch latches and must be manually cleared. Recycle models automatically reset once pressure returns to the set range.

Does this switch require a specific mounting orientation?
Yes, for maximum accuracy, Antunes HLGP-A switches should be mounted horizontally with the gas inlet stems pointing downward.

Can I use this for both natural gas and propane applications?
This switch is compatible with natural, manufactured, or liquefied petroleum (LP) gases typically found in industrial combustion systems.

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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