Kromschroder Gas pressure regulator with solenoid valve VAD1T25N/NQ-100A 88001841

The Kromschroder VAD1T25N/NQ-100A (SKU 88001841) is a gas pressure regulator with an integrated solenoid valve, designed for gas burners, boilers, and industrial installations. It has a nominal diameter of 25 mm with a 1" NPT female connection thread. The device operates with a maximum inlet pressure of 500 mbar and a working pressure range of 35–100 mbar. It requires a supply voltage of 120 V at 60 Hz. The unit is certified to FM, CSA, UL, and AGA standards and features a compact design for minimal installation complexity.

When selecting a replacement gas pressure regulator with solenoid valve, verify the connection size (e.g., 1" NPT), the coil voltage and frequency (e.g., 120 V, 60 Hz), and the required pressure range. Ensure the inlet pressure rating matches the system's maximum supply pressure. The valve should be installed in the gas train, compatible with standard gas ramps and burners. Check the thread type (female NPT) and nominal diameter to match the existing piping.

Common failure modes for this type of valve include a burnt-out coil, leaking seat, drifting outlet pressure, or a seized servo regulator. Symptoms may include the burner failing to ignite, unstable flame, or gas flow not shutting off when the control signal is removed. Check the coil continuity, inspect the seat for debris or wear, and verify the outlet pressure against the setpoint.