Kromschroder Work diaphragm VGBF/VAR/GIK100 /B 74924632

This is a working diaphragm for Kromschroder gas pressure regulators, model VGBF/VAR/GIK100 /B, SKU 74924632. It is made of gas-resistant elastomer (NBR/perbunan) and weighs 0.419 kg. The diaphragm converts differential pressure into mechanical force to move the valve, ensuring stable outlet pressure or precise gas/air ratio. It is compatible with Kromschroder VGBF 100..40 /B, VAR 100 /B, and GIK 100 /B regulators. This part is manufactured in Germany.

When selecting a replacement diaphragm of this kind, ensure it matches the exact valve series and model, as the effective area and material must be compatible with the gas type and pressure range. Check the part number and catalogue code against the original to confirm fit. During installation, inspect the valve seat and servo spring for wear or debris, and verify the diaphragm's sealing edge is undamaged.

Failure of this kind of diaphragm typically results in unstable outlet pressure, pressure fluctuations, or drift in the gas/air ratio, leading to poor combustion. The equipment may show signs of erratic modulation or failure to open. Check the diaphragm for loss of elasticity, rupture, or perforation, and ensure no debris has compromised its sealing edge.