hp-Technik PON6-D-R-3-20 oil pump

The hp-Technik PON6-D-R-3-20 oil pump is a spare part listed under catalogue article 543.520.016. This is a component from the brand hp-Technik, falling within the oil pump category for burner systems. An oil pump of this type draws fuel from the storage tank and delivers it to the nozzle at the pressure that sets the firing rate. An integral solenoid valve provides the sharp cut-off required by the burner control sequence. When selecting a replacement oil pump, the key parameters are the rotation direction (clockwise or counter-clockwise as viewed from the shaft end), whether the system operates in single-pipe or two-pipe mode, the capacity and pressure range, the shaft dimensions and mounting pattern, and the connection thread sizes. Some oil pumps in this class may include a preheater for heavier grades of oil; others rely on external preheaters. A filter protects the pump and the nozzle from debris. Common failure modes for such pumps include worn gears that lose flow capacity, a weak pressure regulation mechanism, a leaking shaft seal, and solenoid coil failure that prevents clean shut-off. When replacing, the technician should confirm that the new pump matches the existing hydraulic circuit and that the drive coupling aligns correctly. The pump interacts directly with the burner control (which energises its solenoid), the oil nozzle (which it pressurises), and, if fitted, the preheater and fuel line filter.