Hydrolevel 450 Boiler Low Water Cut-OffThe Hydrolevel 450 Boiler Low Water Cut Off is a reliable safety device designed to protect boilers from low water conditions. This SPDT switch type cutoff provides automatic reset and a precise burner delay to ensure safe startups and shutdowns. Built for residential and commercial boiler systems, it handles steam and water media with UL listed reliability. Key specs include 120 V AC, 60 Hz input, 4 VA, and a 15 PSI pressure rating. The unit features

and aligns with the FSG 136733 specification

precise modulation across a 3–10 psi control range

The compact design supports standard flare configurations while maintaining long-lasting reliability in demanding thermal cycles

and G7XC models

this controller delivers consistent performance in commercial and industrial environments

and designed to fit standard Burnham boilers

Pressure range:

Genuine AO Smith replacement part to extend heater life

a direct-acting

making it a smart choice for replacements and upgrades in demanding environments

making it suitable for many commercial and industrial applications

Override capability for quick setpoint adjustments