Antunes Controls 804111705 Pressure Switch

The Antunes Controls 804111705 Pressure Switch is a high-performance HLGP-A gas pressure switch engineered for precision monitoring in industrial gas trains, boilers, and commercial HVAC combustion systems. This dual-function high and low gas pressure switch features adjustable ranges of 5-28"wc high and 2-14"wc low, offering comprehensive protection by cutting the electrical control circuit when pressures drift outside safe limits. Built with a rugged die-cast aluminum housing, this manual reset pressure switch ensures maximum safety by requiring a deliberate system restart after a pressure fault. It features two SPDT (Single-Pole Double-Throw) switches and specialized porting, including a 3/8" NPT high pressure connection, a 1/8" NPT low pressure connection, and a 1/8" NPT vent. This reliable HVAC safety control supports versatile mounting and is rated for temperatures ranging from -40°F to 140°F, making it an essential component for maintaining system integrity in demanding environments.

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Key Benefits

• Precise Dual Monitoring: Integrates both high and low pressure sensing in a single unit for streamlined gas train safety.
• Adjustable Setpoints: Flexible 5-28"wc high and 2-14"wc low ranges allow for custom tuning to specific burner requirements.
• Manual Reset Security: Prevents automatic recycling of equipment during hazardous pressure fluctuations, ensuring operator intervention.
• Industrial Durability: The rugged aluminum construction and high surge rating (up to 10 PSI) provide long-term reliability in harsh mechanical rooms.
• Easy Installation: Horizontal mounting design does not require perfectly accurate leveling, simplifying the setup of combustion system controls.

Common Questions

What is the difference between the high and low connections on this Antunes switch?
The 804111705 utilizes a 3/8" NPT port for high-pressure sensing and a 1/8" NPT port for low-pressure sensing to accommodate standard industrial gas valve sizing and piping configurations.

How do I know if the switch has tripped?
This HLGP-A model features a manual reset lever. If the gas pressure exceeds 28"wc or falls below 2"wc, the circuit will break and stay open until the pressure returns to the normal range and the lever is manually reset.

Can this pressure switch be used outdoors?
While it features a wide operating temperature range (-40° to 140°F), it is recommended for use within protected enclosures or indoor environments typical of industrial oven and boiler rooms.

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.