Johnson Controls T-4002-9009 Pneumatic Thermostat Els PW 17895 With its Class H insulation

With its Class H insulation

It is specifically designed for seamless integration with Honeywell Q624 and Q652 Series pilot burners

also identified as the BFK-306S

5 inches wide

Look for visible signs of "swarf" or metallic debris near the hub

Johnson Controls T-4002-9009 Pneumatic Thermostat Els PW 17895 With its Class H insulationThe Johnson Controls T 4002 9009 Pneumatic Thermostat is a high volume output single temperature controller specifically designed for facility managers and HVAC technicians who require precise proportional control in commercial settings. Operating on a reverse acting sequence, this thermostat increases its branch line pressure as the ambient temperature decreases, making it ideal for managing heating and cooling applications through 2 pipe pneumatic