providing the fast

Internal blockages from sediment or scale can occur within the 1/4" tubing over time

preventing mechanical binding and internal gear stress

if your unit exceeds this capacity

High-Capacity Throughput: Optimized for large-scale systems with a 21 Cv rating for maximum gas flow

Lochinvar & A.O. Smith 100074280 Limit Switch 318518-761 providing the fastThe Lochinvar & A. O. Smith 100074280 High Limit Switch is a critical safety component engineered to provide thermal protection in high efficiency heating systems. Designed as a genuine OEM replacement part, this switch monitors the internal temperature of the heat exchanger or burner door to prevent unsafe operating conditions. If temperatures exceed the factory defined safety threshold, the 100074280 triggers an immediate system lockout to mitigate