Kromschroder Solenoid coil (actuator) 74921976

The Kromschroder 74921976 is a solenoid coil (actuator) designed for use with Kromschroder VA2 and VA3 series valve bodies, specifically the VA2,3..W/B models. It converts an electrical signal into mechanical movement to open or close the valve, enabling precise control of gas or air supply in burner and boiler automation systems. This coil operates in standard industrial control circuits, typically at 230 V AC, 50/60 Hz. It is a replacement component that can be installed without removing the valve body from the gas line.

Parts of this type are selected by the valve brand and series, the required coil voltage (commonly 230 V or 24 V AC/DC), and the valve's function (single or double solenoid, slow-opening, servo-regulated, or multiblock). The coil must match the valve body's electrical and mechanical interface. Before ordering, verify the coil voltage against the burner control wiring and ensure the gasket or O-ring between the coil and valve body is in good condition to prevent gas leakage.

Failure of this kind of coil typically results in the valve failing to open or close, causing a burner lockout. Common issues include coil burnout due to voltage mismatch or prolonged energization, and mechanical wear from frequent on/off cycles. Check the coil for continuity and visual damage, and verify the voltage supply matches the coil rating.