Williams P213400 Switch Constructed from wrot copper to

Constructed from wrot copper to ASTM B75 standards

If you see a small blue spark jumping to the furnace frame instead of the burner

offering a reliable solution for reversing proportional pneumatic signals in complex automation sequences

Common Questions Is the 42J04 compatible with my older 42J0401 switch

Dual-temperature applications typically require the T-4000-611 variant

Williams P213400 Switch Constructed from wrot copper toThe Williams P213400 Fan Selector Switch F160 30F is a critical OEM spec replacement component engineered for high performance direct vent and gravity wall furnaces. As a primary HVAC blower control switch, this unit facilitates precise multi speed fan regulation to maintain optimal thermal distribution and equipment efficiency. Designed specifically as a Williams furnace replacement part, the F160 30F integrates seamlessly with Williams models