Kromschroder Gas solenoid valve VAS350R/NW 88000043

The Kromschroder VAS350R/NW gas solenoid valve (SKU 88000043) is a double valve seat type with a threaded flange connection and RP internal thread, size 3. It operates at 230 V AC, with the alternating voltage rectified internally, and features a blue LED that lights up when energized. The valve closes within 1 second when power is disconnected, and includes flow adjustment. It is EU certified to EN 13611, with performance level PL e and safety integrity level SIL 3. Inlet and outlet connections are DN 50 (2"), and it comes with 2 screw plugs on each side.

When selecting a replacement valve of this type, ensure the voltage, connection type (threaded flange with RP internal thread), and size match the existing installation. Verify the inlet and outlet diameters (e.g., DN 50) and the thread type (RP or NPT) to fit the piping. The valve's performance level (PL e) and safety integrity level (SIL 3) must meet the system's safety requirements. Installation involves connecting the electrical supply via the M20 cable gland and ensuring proper sealing of the threaded connections.

Common failures include the valve not opening or closing properly, often due to coil burnout or debris blocking the valve seats. Symptoms may include the blue LED not lighting up when power is applied, or the valve failing to close within the specified time. Check the electrical connections and coil continuity, and inspect the inlet strainer for blockages. If the valve leaks, verify the integrity of the valve seats and seals.