Kromschroder Repair kit (Spare Part Set / Seal Set) 74924652

This repair kit (spare part set / seal set), SKU 74924652, is intended for the maintenance of Kromschroder VGBF gas pressure regulators and VAR differential pressure regulators. It is used to restore the tightness of the regulator by replacing the sealing components that wear during operation. The set fits VGBF regulators of the 80/100..10/40 range and VAR 80/100 /B models. It weighs 0.028 g, is made in Germany, and is designed for natural gas and liquefied gas (propane-butane).

Replacement kits of this type are selected by matching the exact regulator model, nominal size, and pressure range stated on the type plate. The type plate also shows the revision level, which must correspond to the kit. During installation, use only the seals and gaskets supplied with the kit, discard all old sealing components, and tighten fasteners to the manufacturer's specified torque. After reassembly, a gas tightness test must be performed before returning the burner to automatic operation.

Over time, the elastomer seals and diaphragm in such regulators lose elasticity and harden. This leads to unstable outlet pressure, gas leakage, and a risk of emergency shutdown. On the burner, the symptoms include poor ignition, fluctuating output, or unsafe burner cutoff. Inspect the regulator for cracked or deformed diaphragm material and carry out a leak test if these signs are present.