Kromschroder-Gasventil VG 40/32R02LT31D

This is a gas valve from the Kromschroder VG series, listed under catalogue article 624.331.085 and manufacturer code 85208120. Parts of this type 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 safe conditions; in premix burners a pneumatic gas/air link often ties the valve to the fan to maintain the correct mixture ratio. When replacing a gas valve of this class, the engineer must match the connection size (available as Rp threaded from 1/2" to 2" or flanged), the coil voltage (typically 230 V AC or 24 V AC/DC), and the functional configuration — single or double solenoid, slow opening, servo-regulated, or a multiblock with an integrated filter and pressure regulator. The coil is often a replaceable component separate from the valve body, which can simplify repairs. Typical failures that may necessitate replacement include coil burnout, leaking seat, drifting outlet pressure, or a seized servo regulator. Verify that the new valve corresponds to the existing burner’s brand, series, and sizing requirements before fitting.