hp-Technik UMG-1104-I-2-H2 oil motor pump

The hp-Technik UMG-1104-I-2-H2 oil motor pump is listed under catalogue article 543.526.025, with manufacturer codes 03905015 and 543.526.025, in the oil pump stations category. Parts of this type draw fuel from the tank and deliver it to the nozzle at the pressure that sets the firing rate. The integral solenoid valve provides the sharp cut-off that the burner control demands for clean flame extinction. When selecting a pump of this class, the heating engineer must verify the rotation direction, single or two-pipe operation, required capacity and pressure range, shaft and mounting pattern, and connection thread sizes. For heavier oil grades, a preheater is used to improve atomisation, and a filter protects the pump and nozzle from contamination. Typical failure modes in such pumps include worn gears that reduce output, weak pressure regulation, a leaking shaft seal, or a solenoid coil failure that prevents the burner from cutting off cleanly and may cause after-drip. No specific compatibility with appliance models, dimensions, or performance ratings for this particular article are given; the part is identified solely by its catalogue and manufacturer codes.