Antunes Controls 803113101 Pressure Switch

The Antunes Controls 803113101 is a commercial-grade LGP-H Low Gas Pressure Switch engineered for precision monitoring in industrial combustion systems. Designed for safety-critical applications, this manual reset pressure switch features a set point range of 1-7 PSI, ensuring equipment remains protected if gas pressure drops below necessary operational levels. Built with a rugged die-cast aluminum housing, the Antunes 803113101 provides exceptional repeatability and durability in demanding HVACR environments. The unit includes a 1/4" NPT connection for the primary inlet and a 1/8" NPT vent, allowing for standard integration into existing gas trains. The SPDT (Single Pole Double Throw) electrical configuration enables flexible wiring for both alarm indication and system shutdown. As a manual reset model, this switch forces a technician to inspect the system before restarting, preventing rapid cycling during low-pressure events. For HVACR professionals maintaining boilers and furnaces, this low gas pressure switch offers a reliable, field-tested solution for maintaining consistent safety standards.

Key Benefits

• Precision Safety: Monitors 1-7 PSI thresholds to prevent unsafe operation under low-pressure conditions.
• Standard Plumbing: Utilizes a 1/4" NPT connection and 1/8" NPT vent for easy field installation.
• Durable Construction: Heavy-duty die-cast aluminum housing protects internal low gas pressure switch components.
• Visual Diagnostics: Includes a clear ON-OFF indicator for immediate status verification by service technicians.
• High Surge Resistance: Engineered to withstand temporary surge pressures up to 35 PSI without losing calibration.

Common Questions

How do I troubleshoot an Antunes 803113101 that won't reset?
First, verify that the actual line pressure is above the 1-7 PSI set point using a calibrated manometer. If pressure is adequate, inspect the 1/4" NPT inlet and the 1/8" NPT vent for blockages or moisture that may interfere with the sensing diaphragm.

Can this switch be used in horizontal mounting positions?
Yes, the Antunes Controls 803113101 is designed to be mounted horizontally without requiring specialized leveling, making it versatile for tight mechanical rooms.

What is the difference between this manual reset and an automatic reset switch?
A manual reset model like the LGP-H requires physical intervention to restart the circuit after a pressure drop, whereas an automatic reset switch will close the circuit as soon as pressure returns to the set point. Manual resets are typically required for primary safety limits.

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.