Kromschroder Gas pressure switch DG6B-3 84447100

The Kromschroder DG6B-3 gas pressure switch (SKU 84447100) is a pressure switch designed to regulate positive, negative, or differential air and flue gas pressures. It has an adjusting range of 400–600 mbar and features screw terminals for electrical connection. The switch has an IP54 protection class and weighs 321 g. It is certified to EN 13611:2015+AC:2016 and EN 1854:2010, with approval CE-0085AP0466, and has a designed lifetime of 10 years.

When selecting a replacement pressure switch of this type, ensure the adjusting range matches the required pressure setpoint and that the electrical connection type (e.g., screw terminals) is compatible with the existing wiring. The switch must be mounted in the correct orientation and position to sense the intended pressure. Verify the protection class suits the installation environment. Always compare the pressure range and switching function (e.g., rising or falling pressure) with the original part before ordering.

Pressure switches of this kind may fail due to diaphragm rupture, contact wear, or blockage of the pressure sensing port. Symptoms include the burner failing to start, intermittent shutdowns, or the system not responding to pressure changes. Check for visible damage, test the switch with a manometer, and verify electrical continuity across the terminals.