Kromschroder Válvula de amortiguación Kromschroeder VGBF/B (74924681)

This article is a gas valve of the damping valve type from Kromschroder, identified by catalogue article 624.337.118-2 and manufacturer code 624.337.118. Gas valves of this class shut off and meter the gas supply to the burner. They open on command from the burner control and only when the gas pressure switch confirms that the supply pressure is within the safe range. In premix burners, a pneumatic gas/air link ties the valve to the fan to maintain the correct mixture ratio. Damping valves are a variant where the opening movement is slowed down to avoid a sudden pressure surge when the burner starts. Selection of such valves is based on brand and series, connection size (typically Rp 1/2″ to 2″ or flanged), coil voltage (230 V or 24 V AC/DC are common), and the specific function required: single or double solenoid, slow opening servo regulation, or a multiblock that incorporates a filter and pressure regulator. When replacing a valve of this type, check that the replacement matches the existing connection, coil voltage, and the opening characteristic – for a damping valve, the closing or opening rate must be appropriate for the burner control sequence. Typical failures include coil burnout, leaking seat, drifting outlet pressure, or a seized servo regulator. The coil is often replaceable separately from the valve body, which can simplify a repair if the valve body itself is still sound.