Velocity Boiler Works (Crown) 14-007 Vacuum Switch 326070-701 preventing backdrafts and ensuring consistent

preventing backdrafts and ensuring consistent combustion regardless of outdoor wind conditions

Proper installation of the York replacement orifice is essential for achieving consistent ignition and reliable heat exchanger performance in residential and light commercial gas-fired furnaces

Featuring a 10x7 wheel size (nominally 10-5/8" diameter and 7-1/8" width) with a 1/2 inch bore

The clockwise (CW) rotation is calibrated for specific aerodynamic profiles to prevent turbulent airflow and excessive vibration that can lead to premature motor bearing failure

Velocity Boiler Works (Crown) 14-007 Vacuum Switch 326070-701 preventing backdrafts and ensuring consistentThe Velocity Boiler Works 14 007 Vacuum Switch is an essential safety component engineered for precise differential pressure monitoring in high efficiency heating systems. Known as a cross reference equivalent to Crown 14655005, this switch ensures the inducer motor is generating sufficient static pressure to safely vent combustion gases before the ignition sequence initiates. Built for durability in commercial and residential HVAC internal