Antunes Controls 804111709 Pressure Switch

The Antunes Controls 804111709 is a high-performance HLGP-A Series gas pressure switch designed for critical monitoring of high and low pressure limits. This specialized dual pressure switch features two independent SPDT vacuum switches, both offering a field-adjustable range of 10" to 50" W.C. to ensure precise burner and boiler control. Built for industrial environments, the assembly includes a 3/8" NPT high pressure connection, a 1/8" NPT low pressure connection, and a 1/8" NPT vent. The manual reset mechanism provides an essential safety layer for contractors, requiring physical intervention should pressure thresholds be breached. Ideal for combustion safety systems, this Antunes HLGP-A switch utilizes rugged construction to handle variable gas pressures, ensuring stable HVAC pressure monitoring without frequent calibration drift. Whether you are performing a commercial boiler repair or a new gas pressure switch installation, this unit offers the reliability required for high-stakes natural gas pressure sensing applications.

• Dual-Function Monitoring: Combines high and low gas pressure sensing into a single, compact housing to save manifold space.
• Precise Setpoints: Independent 10-50" W.C. adjustment for both high and low circuits ensures tight tolerance control.
• Manual Reset Safety: Prevents automatic recycling of equipment during unsafe pressure conditions, complying with strict industrial protocols.
• Standard NPT Fittings: Features a 3/8" NPT inlet and 1/8" NPT low and vent ports for seamless integration into existing gas trains.
• Durable SPDT Contacts: Rated for reliable electrical switching in demanding HVACR control circuits.

How do you adjust the setpoints on the HLGP-A 804111709?
Adjustments are made by removing the cover and turning the internal scales to the desired "water column inches" for both the high and low limits.

What is the purpose of the 1/8" NPT vent connection?
The vent connection allows for atmospheric pressure sensing or piping to a safe outdoor location, preventing gas buildup in the enclosure in the event of diaphragm rupture.

Can this switch be used for both natural gas and propane?
Yes, the Antunes 804111709 is compatible with natural gas, propane, and air, making it a versatile component for various industrial gas pressure configurations.

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.