Kromschroder Butterfly valve BVG65Z05H 88300824

The Kromschroder BVG65Z05H (SKU 88300824) is a butterfly valve designed for regulating the volumetric flow of air, gas, or flue gas in ventilation, burner, and process systems. It features a rotary disc that adjusts the cross-section of the duct, enabling precise flow control with a ratio of 10:1. The valve is installed between two DIN flanges and can be operated with a servo or manual actuator. It is rated for a maximum overpressure of 500 mbar and is manufactured in Germany.

When selecting a replacement butterfly valve of this type, ensure the connection size matches the existing flanges (typically between two DIN flanges) and that the actuator type (servo or manual) is compatible with the system's control. Verify the maximum overpressure rating meets or exceeds the system's operating pressure. The coil, if present, is often replaceable separately, so check its voltage and compatibility with the burner control.

Common failures in butterfly valves of this kind include coil burnout, leaking valve seats, or a seized actuator mechanism. Symptoms may include unstable flow regulation, pressure fluctuations, or failure to open or close properly. Check the coil continuity, inspect the disc and seat for wear or debris, and ensure the actuator linkage is free and correctly adjusted.