McDonnell & Miller PSE801M-120 Boiler Low Water Cut-OffThe Boiler Low Water Cut Off, specifically the McDonnell & Miller PSE801M 120, protects steam and hot water boilers with precise probe based sensing and electronic actuation. Designed for general purpose boiler protection, this unit delivers reliable low water detection and a straightforward manual reset for safety and serviceability. UL (Canada and US) and ASME CSD 1 compliant, it features a 7000 Ohm probe for accurate sensing and a compact enclosure

reliable flame monitoring

the Lau Blower Wheel improves airflow efficiency and steadies motor load for quieter operation

rugged design for harsh environments

Choose the AFS-262-121 for precise air pressure sensing

built to guard boilers

OEM AO Smith replacement part suitable for 9005888205 and 100110703 kits

Junction box note: Does not include a junction box

20 amps and runs at 825 RPM

It performs the upper-limit function to prevent overheating while maintaining steady hot water delivery

and electrical transients typical of residential HVAC

this valve offers safe

Engineer-grade reliability and straightforward installation make the T675A1524 an ideal choice for precise temperature control in commercial HVAC and process environments