Kromschroeder 74924632 VGBF/VAR/GIK100 /B work diaphragm

Working diaphragm Kromschroder 74924632 for VGBF/VAR/GIK 100 /B is an original spare part that is the "heart" of the regulator. It is designed to replace a worn part in VGBF 100..40 /B gas pressure regulators, VAR 100 /B differential pressure regulators, and GIK 100 /B gas-air ratio regulators. This diaphragm converts differential pressure into mechanical force to move the valve, ensuring stable outlet pressure or precise gas/air ratio maintenance regardless of inlet fluctuations. Failure of the standard diaphragm (loss of elasticity, rupture) leads to unstable burner operation, pressure fluctuations, poor combustion, and risk of emergency shutdown. Timely replacement with an original diaphragm guarantees restoration of factory specifications. Technical specifications: Parameter Value; Part numbers 74924632, 624.478.006, Kromschroder VGBF/VAR/GIK 100 /B; Manufacturer Kromschroder / Honeywell (Germany); Part type Working diaphragm (Diaphragm / Working diaphragm); Compatibility VGBF 100..40 /B (gas pressure regulator DN100), VAR 100 /B (differential pressure regulator), GIK 100 /B (ratio regulator); Material Elastomer (NBR/Perbunan), gas resistant; Weight 0.419 kg; Application Natural gas, liquefied gas (propane-butane), biogas. Application and signs of wear: Regulators using this diaphragm are installed on gas lines before the burner in industrial boiler houses, furnaces, and heat generators for pressure stabilization or proportional flow control. Signs of malfunction or wear: Unstable outlet pressure: pressure floating or pulsating after the regulator (relevant for VGBF). Gas/air ratio drift: inability to set normal combustion (O2/CO2 content fluctuates).