Antunes Controls 804112107 Pressure Switch

The Antunes Controls 804112107 (Model RHLGP-A) is a robust high-low gas pressure switch designed for critical monitoring of gas pressure levels in industrial burners and HVAC systems. This dual-setpoint pressure switch features an automatic reset function, ensuring consistent system oversight without manual intervention after pressure stabilization. It is engineered with a high pressure range of 5" to 28" W.C. and a low pressure range of 6" to 24" W.C., providing precise differential pressure control for safety-critical applications. The unit utilizes two SPDT (Single Pole Double Throw) switches, allowing for versatile wiring configurations in control circuits. Installation is streamlined via a 3/8" NPT high pressure connection, a 1/8" NPT low pressure connection, and a 1/8" NPT vent. Built for durability in demanding environments, this HVAC gas pressure sensor ensures reliable performance and combustion safety compliance for professional contractors and technicians.

Key Benefits

• Dual-Action Monitoring: Integrated high and low pressure sensing in a single compact housing reduces installation footprint.
• Auto-Reset Functionality: Eliminates downtime by automatically restoring circuit continuity once gas pressure returns to calibrated setpoints.
• Technical Porting: Includes standard NPT threaded connections (3/8" and 1/8") for secure, leak-free integration into gas trains.
• Electrical Versatility: Dual SPDT switch logic supports simultaneous signaling to BMS controllers and safety shut-off valves.
• Industrial Grade: Designed Specifically for Antunes Controls reliability in high-cycle atmospheric and forced draft burner systems.

Common Questions

How do I adjust the setpoints on the RHLGP-A?
Adjustments are made via the internal scale dials; use a calibrated manometer to verify the gas pressure trip points during commissioning.

Can this switch be used with propane or natural gas?
Yes, the 804112107 pressure switch is compatible with natural gas, LP gas, and air applications common in commercial heating.

What is the purpose of the 1/8" NPT vent connection?
The vent port allows for the safe piping of gas to a combustion chamber or atmosphere in the event of a diaphragm rupture, meeting safety 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.