Kromschroder Gas solenoid valve VG15R02NT31D 85205030

The Kromschroder VG15R02NT31D is a solenoid gas valve with a nominal diameter of 15 mm (DN15) and a Rp 1/2 connection thread. It operates with a supply voltage of 230 V at 50 Hz and has a maximum inlet pressure of 200 mbar. The valve provides fast opening and closing, and it closes automatically in a de-energized state for safety. It is rated IP54 for dust and splash resistance and operates within a temperature range of -20 to 60 °C. This valve is designed for automatic gas shut-off and control in heating and process systems, suitable for both commercial and domestic use, and complies with EN 161 safety standards.

When selecting a replacement solenoid gas valve of this type, ensure the connection size (e.g., DN15) and thread type (e.g., Rp 1/2) match the existing piping. Verify the coil voltage (e.g., 230 V) and frequency (e.g., 50/60 Hz) are compatible with the burner control system. Check the maximum inlet pressure rating to suit your gas supply. The valve may be installed directly without adapters if the thread matches. The coil is often replaceable separately, so confirm its specifications if only the coil needs replacement.

Common failure modes for solenoid gas valves include coil burnout, which may be caused by incorrect supply voltage or electrical faults, leading to the valve not opening. A leaking seat can cause gas to pass when the valve should be closed, potentially resulting in unsafe operation. Drifting outlet pressure may indicate a worn servo regulator or seized mechanism. If the valve fails to open or close properly, check the electrical connections, coil resistance, and for debris or damage on the seat.