Kromschroder Spare part set 74922183

Kromschroder spare part set 74922183 is a full repair kit for Kromschroder VGBF25..40 gas pressure regulators. It includes all necessary diaphragms, o-rings, gaskets, and other wearable elements to restore accuracy and tightness. This set is designed for models in the VGBF25..40 range, covering DN 25 and DN 40 sizes. It complies with safety standard EN 88.

Parts of this type are selected by matching the set reference to the exact valve model designation, as the VGBF series covers several sizes. Before ordering, verify the valve's nameplate to ensure compatibility. During installation, isolate the gas supply, depressurise the valve train, and remove the cover and actuator carefully. Replace all components in the set, do not reuse old gaskets or o-rings, and torque cover bolts to manufacturer's specification. After reassembly, perform a tightness test before returning the burner to service.

Items of this kind fail due to wear of diaphragms, o-rings, and gaskets, leading to loss of pressure accuracy and potential gas leaks. Symptoms include unstable pressure regulation, gas odor, or failure to maintain setpoint. Check for visible damage or hardening of seals, and replace the set if any wear is detected.