Weil McLain 510-811-221 Pilot Assembly Kit R-410A while most include the integrated

while most include the integrated hub and set screw

making it a versatile replacement HVAC limit switch

This OEM replacement part is essential for technicians tasked with restoring the reliable dry-fire protection required in hydronic heating systems

it follows the 18mm DIN 43650 Form A standard

This straight-style sensor

Weil McLain 510-811-221 Pilot Assembly Kit R-410A while most include the integratedThe Weil McLain 510 811 221 Pilot Assembly Kit is a critical OEM replacement part engineered specifically for Weil McLain CGi gas boilers (models CGi 25 through CGi 8). For technicians troubleshooting a boiler pilot light not staying lit, this kit provides a comprehensive solution by replacing the core ignition components. It includes the natural gas pilot burner, a precision calibrated pilot orifice, and the integrated pilot bracket, ensuring proper