Johnson Controls T-4002-203 Pneumatic Thermostat 30067439-890 and corrosive fertilizers or cleaners

and corrosive fertilizers or cleaners

Hydronic Compatibility: Rated for standard water-based heating loops and glycol-mix systems often found in hydronic installations

Reduced Maintenance Costs: Minimizes the risk of welded contacts and equipment downtime

Optimized Performance: Maintains the correct air-to-fuel ratio by eliminating vacuum leaks at the burner interface

20" WC for this specific application

Johnson Controls T-4002-203 Pneumatic Thermostat 30067439-890 and corrosive fertilizers or cleanersThe Johnson Controls T 4002 203 is a high performance direct acting pneumatic thermostat designed for precise temperature regulation in commercial HVAC systems. This vertical mount controller features a bimetal sensing element that provides a proportional output signal to modulate valves and damper actuators. Engineered for reliability in building automation systems, the T 4002 203 operates with a 55 85F dial range and a high volume output of 400