Kromschroder Gas valve VAS125R/NK 88000089

The Kromschroder VAS125R/NK gas valve (SKU 88000089) is a double valve seat solenoid valve with a coil voltage of 24 V. It operates within a pressure range of 0–500 mbar and a maximum pressure of 0.5 bar. The valve features RP internal thread connections, with 2 screw plugs on each side, and includes flow adjustment. It closes within 1 second, and its blue LED indicates operation, going out when de-energized. The electrical connection is via an M20 cable gland, and alternating voltage is rectified internally. The valve weighs 1.603 g and is suitable for pipe connections from DN10 to 65, including DN40 and DN50.

When selecting a valve of this type, ensure the coil voltage matches the control system (e.g., 24 V). Verify the pressure range and maximum pressure meet the application requirements. Check the thread type (RP internal) and size (DN range) against the existing piping. Confirm the electrical connection type (e.g., M20 cable gland) and the presence of necessary accessories like screw plugs. For installation, ensure the valve is oriented correctly and that the flow direction matches the arrow on the body.

Common failures include coil burnout, leading to the valve not opening or closing properly. If the blue LED does not light up when power is applied, the coil may be faulty. A valve that fails to close within 1 second could indicate a stuck armature or weakened spring. Check for debris or corrosion on the valve seats, which can cause leakage or improper sealing. Also, verify the electrical connections for loose wires or shorts.