Page 28: of Maritime Reporter Magazine (April 15, 1974)

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Are you aware of all the vertical turbine advantages? • Multi-staging allows the engi- neering of a pump unit that delivers the required flow and pressure at optimum efficiency. • Minimize variations in flow due to head pressure fluctuation.

Steep head capacity character- istics (as compared to conven- tional centrifugals) permit a greater margin of safety in the selection of design head or discharge pressure conditions • Safe motor loads. Johnston vertical turbine pumps have a nonoverloading power charac- teristic that allows operation at any capacity without over- loading the driver. • Safely meet system NPSH re- quirements, even at zero feet. • Always primed. • Johnston vertical turbines re- quire a minimum of valuable surface area for installation. • Available in a wide range of construction materials and sizes.

The drawing above shows a

Johnston vertical "Stripper" for shallow draft barge applications. Johnston vertical pumps are built for safe, rapid unloading and stripping of cargo barges and other carriers w «! •J w

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Here's where verticals pay off in performance...

Volatiles—-Verticals meet the critical NPSH requirements in handling volatile cargoes.

Caustics—In-hold pump eliminates need for costly suction pipe installation.

Product and fuel transfer—

Most efficient hydraulics and most economical use of space and power.

Engine room applications —

Use Johnston verticals to simplify pump installation.

On each pump application, look at the advantages vertical turbines give you—and look to

Johnston for vertical turbines... and mixed flow and axial flow verticals as well. Sizes from 10 to 200,000 GPM, for heads from 5 to 4,000 feet.

Johnston Pump Company 1775 East Allen Avenue

Glendora, California 91740 (714-599-2351) ra lohnston Pumps

April 15, 1974 31