or a furnace that fails to stay lit due to a pressure switch error

Calibrated for a fixed setpoint of 1

This switch is designed to open on a pressure rise at 475 PSI with a range of +/- 10 PSI

Always verify the cross-reference part number (184768-001) on the existing housing before installation to ensure a proper fit with the 1

Ensures a gas-tight seal for Lochinvar Power-Fin boilers (models 502-1302)

Dwyer Instruments 475-1-FM Manometer 326058-758 or a furnace that failsThe Dwyer Instruments 475 1 FM Manometer is a field ready intrinsically safe digital manometer designed for the precise measurement of positive, negative, or differential pressures. Engineered for natural gas pressure testing and HVAC troubleshooting, this rugged tool features a range of 0 to 20. 00" w. c. (4. 982 kPa) with a 10 psig maximum pressure limit. The FM approved rating makes it essential for technicians working in hazardous Class I, Div. 2