the SP155-011 is the updated

it’s designed for efficiency

If the switch remains open even after the system has cooled

188" dimensions required for a drop-in replacement

this 2-inch mini flame rod provides rapid and accurate flame presence detection

Weil McLain 510-312-279 Blower Wheel 30067439-890 the SP155-011 is the updatedThe Weil McLain 510 312 279 Blower Wheel is a critical combustion component engineered specifically for VHE Series 1 through 3 gas boilers. For technicians troubleshooting draft inducer assemblies or airflow failures, this 5. 72" x 2" stainless steel blower wheel provides the necessary corrosion resistance to handle high temperature flue gases and moisture. Unlike standard galvanized wheels that often succumb to oxidation in high efficiency systems,