Honeywell L91A1136 Proportional Pressuretrol Controller 135 Ohm 10-300 PSI

The Honeywell L91A1136 Proportional Pressuretrol Controller is a pneumatic part used in HVAC systems to control pressure. It modulates a pneumatic signal according to the measured pressure to provide precise control of airflow and system performance. Typically used in fan speed control, damper actuation, and pressure control applications in many HVAC equipment, such as air handling units, chillers, and boilers, this controller is commonly used. Benefits include better system efficiency, better comfort, and lower energy consumption.