Reznor 197078 Flow Switch 30067439-890 By delivering consistent feedback to

By delivering consistent feedback to the economizer or controller

This high-temperature boiler sight glass resists the etching and clouding common in older natural gas units

technicians should verify the gap against the specific burner manufacturer’s requirements before finalizing installation

which facilitates rapid field replacement using the PIRR replacement relay module without requiring a full rewire

the adapter breaks the millivolt signal to the gas valve's power unit

Reznor 197078 Flow Switch 30067439-890 By delivering consistent feedback toAs a veteran technician, you know that a failing pressure switch quickly shuts down a job site. The Reznor 197078 Air Flow Switch is the primary safety mechanism for ensuring proper draft and venting before the burner cycle begins. This genuine OEM part is engineered with a specific 0. 80 IN WC set point, calibrated to the rigorous tolerances required for Reznor UDX, UDZ, and older unit heaters. Operating as an SPST contact type (Single Pole Single