Trane SWT3018 Pressure Switch 318973-401 Using it with different refrigerants

Using it with different refrigerants will lead to inaccurate superheat control and potential system instability

Designed to maintain the hydraulic integrity of your system

Integrating this furnace limit control into your York furnace maintenance routine prevents nuisance tripping and protects the heat exchanger from thermal stress

this unit operates at 208/230V and delivers 1/16 HP at a consistent 3450 RPM

ensure the system is thoroughly flushed before installing this MTZ replacement

Trane SWT3018 Pressure Switch 318973-401 Using it with different refrigerantsFor field techs managing low pressure protection in commercial and residential systems, the Trane SWT3018 Pressure Switch (cross referenced as SWT03018) is a critical OEM safety component. This SPST normally open pressure switch is engineered to monitor system conditions and prevent compressor damage due to refrigerant loss or extreme temperature drops. It features a precise 25 PSI open setpoint and a 41 PSI close (reset) point, making it standard for