Lochinvar & A.O. Smith 100166145 - Low Gas Pressure Switch, 2-14" WC, Manual Reset

Protect your hydronic equipment from improper firing sequences with the Lochinvar 100166145 low gas pressure switch. This high-precision safety control is engineered to monitor the inlet gas supply line, ensuring that the burner assembly receives adequate fuel pressure before ignition occurs to prevent incomplete combustion or potential system damage. Known by its specific model designation as the 100166145, this component provides reliable sensing to maintain optimal operating conditions for your water heater system.

This device functions by utilizing an internal diaphragm that reacts to changes in gas line pressure. When the pressure drops below the calibrated threshold of 2-14" water column, the internal switch actuates to break the control circuit, effectively preventing the appliance from firing under unsafe conditions. This proactive safeguard is critical for maintaining thermal efficiency and protecting sensitive boiler and water heater components during fluctuations in the main gas supply.

Key System Performance Baselines:

• Operational Range: Precise sensing between 2" and 14" water column.
• Safety Logic: Automatic circuit interruption during low gas pressure events.
• Durability: Designed for robust performance in high-cycle hydronic environments.

⚠️ Application Profile: Specifically designed for commercial and residential boiler installations, high-efficiency water heater gas lines, and industrial thermal heating systems where consistent fuel pressure monitoring is required for regulatory compliance and safety.

📋 Procurement & Shipping Notice

• LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
• Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.