Direct Acting Non-Relay Vertical Pneumatic Thermostat Zoom

Direct Acting Non-Relay Vertical Pneumatic Thermostat


Brand: Johnson Controls

Johnson Controls
Qty Price
/ each
$236.55 / box (3 units x $78.85)
In Stock! Ships in 24-48 Hours
(7 Available)



Application: Single Stage (Heat/Cool)
Type: Single Temperature
Action: Direct Acting
Programmability: Non-Programmable
Mount: Vertical
User Interface: Mechanical

Description for Johnson Controls T-4100-1

The T-4000 Series Pneumatic Room Thermostats provide individual space temperature control in all types of heating and cooling applications. By producing a proportional output signal, these thermostats modulate controlled devices in response to load changes in the space. This imposes the least demand on mechanical heating and cooling apparatus. A variety of high volume output and low volume output controllers are available to meet the functional requirements of any control system. Auxiliary devices are available to perform functions such as two-position action, high-low pressure selection, sequencing, etc.


  • Adjustable Sensitivities and Set Points
  • Individual Set Points on Dual Temperature Controllers
  • Pneumatic Feedback for Greater Accuracy
  • Vibration and Shock Resistant
  • Meets Governmental and Commercial Requirements
  • Single or Dual Bimetal Sensing Elements
  • Element Identification Labels
  • Rugged Construction and Decorative Design

The T-4100 is a single temperature thermostat. The unit features exposed or concealed set point adjustment and a standard Fahrenheit and Celsius thermometer. With the use of a remote restrictor, this instrument requires only one air connection.

Direct Acting Non-Relay Vertical Pneumatic Thermostat

Q&A: Ask the Questions, share answers

Do you have questions about this product?

Get answers from real customers and in-house experts with AnswerBox.

1 Question | 1 Answer
Displaying question 1
  • Direct Acting Non-Relay Vertical Pneumatic Thermostat


    what is the difference between direct and reverse acting
    Asked on 8/13/2013 by wendell from n shadeland

    1 answer



      Direct acting pneumatic thermostats increase branch line pressure as the temperature increases. Whereas, reverse acting pneumatic thermostats decrease branch line pressure as the temperature increases.

      Answered on 8/28/2013 by PexSupply Staff from NY
Displaying question 1

Do you have a question about this product?