Kromschroder Gas pressure switch DG6UG-3 84447270

The Kromschroder DG6UG-3 gas pressure switch (SKU 84447270) is a component used to monitor and regulate air or flue gas pressure in industrial and commercial burner and boiler systems. It has an adjustable pressure range of 0.4 to 6 mbar and switches with rising pressure. The switch features gold-plated contacts and is rated IP54 for protection against dust and water splashes. It is designed for applications requiring precise pressure control to ensure safe operation.

When selecting a replacement pressure switch of this type, verify the required pressure range, gas type compatibility (air or flue gas), and electrical connection specifications. Ensure the switch's switching function (rising or falling pressure) matches the system's control logic. Mounting dimensions and process connection type must be compatible with the existing installation. Compare the original switch's settings and adjust the new unit to the same setpoint before installation.

Common failure modes for pressure switches include contact wear, diaphragm rupture, or blockage of the pressure sensing port. Symptoms may include burner lockout, erratic operation, or failure to detect pressure changes. Check for visible damage, test continuity across contacts, and verify the pressure setpoint with a manometer.