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The Lennox 93J39 limit switch is a critical safety component designed for precise thermal management in high-efficiency HVAC systems
particularly those utilizing 12-pin control board headers
Simplified Maintenance: Standard 1-inch bore design allows for quick installation on compatible motor shafts
making it the ideal solution for commercial HVAC installations where setpoint tampering must be minimized
For versatile field applications
Watts 0121544 Relief Valve Freon The Lennox 93J39 limit switchThe Watts 0121544 (Series LF174A) is a high capacity boiler pressure relief valve designed specifically for hot water space heating applications. Engineered with a lead free copper silicon alloy body, this 1. 5 inch valve provides critical overpressure protection for large scale hydronic systems. This specific model, also identified as LF174A 1 1 2 100, is factory set at 100 PSI and features a significant discharge capacity of 5,290,000 BTU hr
US$ 62.49
US$ 39.49
US$ 49.31
