hp-Technik NVBRG-D-4-20-BH1 pompa oleju

This oil pump is a component for oil-fired burners in commercial and industrial heating systems. Parts of this type draw fuel from the tank and deliver it to the nozzle at the pressure that sets the firing rate. An integral solenoid valve provides the sharp cut-off that the burner control requires for clean shutdown. In the system, the pump works with the nozzle, the burner control, and—on heavier oils—a preheater and filter. The preheater reduces viscosity so the oil atomises properly, while the filter protects both pump and nozzle from debris. When selecting a replacement oil pump, the key parameters are rotation direction (viewed on the shaft end), single- or two-pipe operation, the required capacity and pressure range, the shaft and mounting pattern, and the connection thread sizes. Compatibility with the existing burner model must be confirmed against the original part’s specifications. Typical failure modes for pumps of this type include worn gears that reduce delivered pressure, weak pressure regulation causing unstable firing, a leaking shaft seal that lets air enter the system, and solenoid coil failure that leaves the burner unable to cut off fuel cleanly, leading to post-drip or delayed shutdown. This unit is listed under the hp-Technik brand and is identified by catalogue article 543.520.032 and manufacturer codes 4140017 and 543.520.032. Before ordering, verify that the configuration matches the pump to be replaced.