Robertshaw 445-B1 Pressure Controller Supply 3-15 PSIG

Robertshaw 445-B1 Pressure Controller Supply 3-15 PSIG is an electro-pneumatic pressure relay that converts an electrical control signal into a regulated pneumatic output in the 3 to 15 PSIG range. It is designed to operate from a typical 20 PSIG air supply and is associated with Robertshaw’s 443A/445A family, which shares the 3–15 PSIG output specification. This compact device provides a pneumatic feed intended to actuate valves or other pneumatic devices within industrial process and HVAC control schemes, enabling a small, reliable signal to drive actuator response in control loops that require a precise, low-pressure pneumatic signal. For proper integration, verify the unit’s electrical input compatibility and the specific pneumatic connections used in your installation, as variations exist across the traditional 443A/445A family and its revisions. When used in appropriate control architectures, the 3–15 PSIG output from a 20 PSIG supply supports both proportional and on/off actuation depending on the connected circuitry, making the 445-B1 a widely compatible option for systems needing a compact electric-to-pneumatic interface.