Johnson Controls T-4000-2145 Plastic Cover Color-Coded Identification: The brown spring

Color-Coded Identification: The brown spring designation allows for quick visual verification of the pressure rating during field service

and potential moisture carryover into downstream sensitive pneumatic instrumentation

a Viton glass gasket set is recommended to ensure chemical compatibility

this base enables rapid detector head replacement and maintenance without disturbing the field wiring

With the power off

Johnson Controls T-4000-2145 Plastic Cover Color-Coded Identification: The brown springThe Johnson Controls T 4000 2145 Plastic Cover is a professional grade replacement engineered specifically for T 4000 series pneumatic thermostats. This beige thermostat cover is designed for vertical mounting applications and provides a clean, secure finish for your field installations. Featuring a single set point window, it allows for immediate visual verification of thermostat settings without the need to remove the housing, streamlining routine