Antunes Controls 804112101 Pressure Switch

The Antunes Controls 804112101 (Model RHLGP-A) is a heavy-duty, dual-monitoring gas pressure switch designed for critical combustion and burner safety systems. This high-low combination unit features a 2-16"wc high and 1-6"wc low range, providing precise setpoint tracking to safeguard equipment from overpressure or underpressure conditions. Built with a rugged die-cast aluminum housing, the 804112101 is engineered for longevity in demanding industrial environments, handling max surge pressures up to 10 PSI and extreme ambient temperatures from -40°F to 140°F.

For contractors, installation is streamlined with a 3/8" NPT high pressure connection, a 1/8" NPT low pressure connection, and a standard 1/8" NPT vent. The unit operates via an auto reset (recycle) mechanism and utilizes two SPDT electrical switches (10A @ 125 VAC) to break the control circuit immediately upon setpoint violation. Field-adjustable scales on the front allow for fine-tuning without specialized tools, making the Antunes 804112101 a reliable choice for commercial boiler and furnace applications requiring UL, FM, and CSA approvals.

• Dual-Setpoint Protection: Independent adjustment for high (2-16"wc) and low (1-6"wc) pressure zones in a single compact housing.
• Automatic Reset: Features a recycle-type mechanism that automatically clears once the gas pressure returns to safe operating parameters.
• Simplified Plumbing: Clearly dedicated NPT ports (3/8" high, 1/8" low/vent) for easy integration into standard gas manifolds.
• Universal Mount: Designed to be mounted horizontally without requiring precision leveling, simplifying field retrofit tasks.
• Industrial Strength: The die-cast aluminum enclosure protects internal components from mechanical shock and environmental stress.

• How do I differentiate between the high and low pressure ports? The Antunes 804112101 uses a 3/8" NPT inlet for the high-pressure side and a 1/8" NPT inlet for the low-pressure side. Ensure these are not swapped during installation to maintain accuracy.
• Is this switch suitable for outdoor installation? While the unit is rugged and rated for low temperatures, it should be protected from direct water ingress. For severe environments, check the enclosure rating or use a protective weather shield.
• What is the maximum electrical load for these SPDT contacts? Each switch is rated for 10A at 125 VAC or 5A at 250 VAC. For higher wattage applications, ensure you are using a relay or motor starter.

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.