Applications: • Heavy oil and light oil. • One pipe and two pipe systems. • Self-priming. • Hub ø 32 mm or hub ø 54 mm with flange. • Capacity from 65 l/h to 210 l/h.
The suction vacuum generated by the gears sucks up the fuel through the suction connection; it crosses the filter and the fuel is sent under pressure to the pressure adjustment screw. The hydraulic valve opens when oil pressure gets over spring strength settled by pressure adjustment screw and the oil reaches nozzle line. In two pipe systems the exceeding oil flows into the tank through the return line; in one pipe system, after the removing the by-pass screw, it goes back to the gears. When burner stops, the oil pressure immediately comes down and the spring strength, move the piston which stop the fluid flow to the line and at the same time allows the forwarding of the light oil to the return line.
