Kromschroder Gas solenoid valve VAS350R/LW 88000047

Kromschroder VAS350R/LW gas solenoid valve, SKU 88000047, is a size 3 double valve seat unit with 230 V AC coil. It features slow opening and quick closing (within 1 s) via a closing spring. The valve has Rp internal thread connections, DN 50 (2'') inlet and outlet, and includes 2 screw plugs on each side. Electrical connection is via M20 cable gland, with a blue LED indicator that lights when energized and goes out when de-energized. Alternating voltage is rectified internally for coil operation.

When selecting a replacement gas solenoid valve of this type, verify the coil voltage (e.g., 230 V), valve size (DN range), and thread type (Rp or NPT) to match the existing piping. For flanged connections, ensure ISO or ANSI standard compatibility, particularly for DN 40 and 50 sizes. Check the electrical connection type (e.g., M20 cable gland) and the number of screw plugs on each side for accessory fitment. The valve's opening characteristic (slow or quick) and closing time must align with the system's operational requirements.

Common failures for this type of gas solenoid valve include coil burnout, which may cause the valve to fail to open or close, and the blue LED not illuminating when power is applied. A stuck or sluggish valve can result from debris or wear on the valve seats, leading to incomplete closure and potential gas leakage. If the valve does not close within the specified time, check the closing spring and armature movement for obstruction or damage. Electrical issues such as loose connections or rectifier failure can also prevent proper operation.