Honeywell C437G-1028 Gas Pressure Switch 1-2-5 PSI

The Honeywell C437G-1028 Gas Pressure Switch is a dedicated sensing device that monitors gas pressure with a 1–2–5 psi range, as indicated by the model name. This compact switch plays a critical role in gas-fired equipment by signaling whether manifold pressure is within the required range, triggering safety or control actions to support reliable ignition and safe shutdown. Identified by the part number C437G-1028, it represents Honeywell's precision gas pressure sensing solutions. The 1–2–5 psi specification captures its range for low-to-moderate gas pressures, making it suitable for installations where precise pressure monitoring is essential to maintain proper operation of the system. Designed for integration into control circuits, this switch provides a discrete electrical signal in response to pressure changes, enabling interlocks and automated control sequences typical in furnaces, boilers, or other gas-powered appliances.