Kromschroder Diaphragm plate VGBF100/B 74924679

This diaphragm plate is a spare part for Kromschroder VGBF100/B gas pressure regulators. It serves as the flexible membrane that separates the gas chamber from the spring chamber and modulates the gas flow as pressure changes. The plate is manufactured from high-strength materials and is intended for use in the VGBF100 and VGBF100/B regulator series. Its Kromschroder part number is 74924679.

Diaphragm plates of this general type are selected by matching the physical dimensions—diameter, thickness, and hole pattern—as well as the material specification to the original part. Always confirm the gas valve model number before ordering, because compatibility cannot be established from the part code alone. When installing, compare the new diaphragm plate with the old one to verify that all dimensions match, and inspect the valve seat and spring at the same time.

Wear of this type of diaphragm plate results in loss of pressure control or leakage. The connected burner may become unstable, use excessive gas, or fail to maintain the required outlet pressure. If such symptoms occur, replace the diaphragm plate with the correct part and check the valve seat and spring for condition.