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The will make your pumps I ; ^ AUTOMATIC SELF-PRIMING • -V: This is how it works SUCTION LINE • Any centrifugal pump can be converted to a com- pletely automatic, vacuum-creating, self-priming pump. The PrimaVac Unit is sensitive only to the flow of fluid from the discharge of the pump. It is not affected by variations in pressure, specific gravity or viscosity of the fluids being pumped. The pump and mechanical seals are protected from overheating or running dry because, as the flow of liquid stops for any reason, recycling starts automatically. PrimaVac Systems have been installed throughout the world on tankers ranging in size from 20,000 dwt to 255,000 dwt, with pump capacities from 625 gpm to 20,000 gpm. Systems can be furnished for any pump size and capacity, standard units being available with discharge diameters of up to 30 inches. Write for descriptive literature HUDSON ENGINEERING COMPANY 1114 Clinton St., Hoboken, N. J. 07030, U.S.A. Phones: 201/659-2600 • N.Y.C. 212/349-0890 Cable: HUDSON HOBOKEN, N.J. SUCTION STRAINER— RECIRCULATION TANK Fig. 3-RECIRCULATION Fig. 5-PUMPING RESUMED
