Resideo 40003918-007 Adapter Kit 63" WC STDT pressure switch

63" WC STDT pressure switch engineered for critical combustion safety monitoring in York HVAC systems

a functioning 8402-093BX will show near-zero ohms of resistance

The Sporlan 168074 QC-2 Green Cartridge is a precision-engineered replacement component for Type Q thermostatic expansion valves (TEVs)

or water heaters

This switch mounts directly to the burner box

Resideo 40003918-007 Adapter Kit 63" WC STDT pressure switchFor veteran HVAC contractors, the Resideo 40003918 007 Adapter Kit (also cataloged as 40003918 007 U) is a critical component for retrofitting and maintaining 3 way diverting valves. This comprehensive zone valve conversion kit is engineered for use with V4044 and V8044 series valves, allowing for a seamless transition from old style powerheads to modern, replaceable models without the need to drain down the system. This significantly reduces labor