Lochinvar & A.O. Smith 100111922 Relief Valve 340155-7026 When you're out on a

When you're out on a call for a residential or light commercial water heater that is failing to maintain setpoint or won't fire at all

vapor-actuated thermometer that operates entirely without batteries or electrical input

the M333A01 is the engineered direct replacement for the legacy Barber Colman M133A01 model

as commercial controls operate on different temperature curves and pressure ratings than residential equivalents

Universal Compatibility: Serves as a direct replacement for Heil Quaker

Lochinvar & A.O. Smith 100111922 Relief Valve 340155-7026 When you're out on aThe Lochinvar & A. O. Smith 100111922 Relief Valve is a critical safety component designed for high demand commercial boilers and water heating systems. This heavy duty 1 inch relief valve is factory set at 50 PSI to provide reliable overpressure protection, preventing catastrophic vessel failure or system damage. As a genuine OEM replacement part, it ensures precise mechanical compatibility with Lochinvar and A. O. Smith equipment, maintaining the