Johnson Controls T-4002-203 Thermostat

Johnson Controls T-4002-203 Thermostat is a direct-acting, single-temperature control device engineered for high-volume output. Built for industrial HVAC and process control, this robust thermostat delivers precise regulation in demanding environments. The vertical mounting design simplifies installation in control panels and equipment racks, helping technicians save time during retrofits and new builds. It handles a healthy flow capacity of 107 milliliters per second and an air consumption capacity of 5 milliliters per second, supporting high-flow applications. With a supply pressure rating of 13 to 25 PSIG and a dial range of 55 to 85 °F, it maintains stable setpoints across varying loads and operating conditions.

Designed for reliability in continuous operation, the T-4002-203 provides straightforward, single-setpoint control with a direct-acting mechanism. Its high-volume output ensures consistent performance in cooling and heating loops, panels, and automation equipment. The vertical mounting orientation and adjustable dial range make it versatile for a wide array of industrial applications, delivering predictable temperature control where it matters most.

• Direct-acting, single-temperature design for reliable regulation
• High-volume output suited for demanding systems
• Flow capacity: 107 ml/s
• Air consumption: 5 ml/s
• Dial range: 55–85 °F; Supply pressure: 13–25 PSIG