D and DN Pumps
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OILGEAR HIGH HORSEPOWER An extension of the well known Oilgear Type "D" radial rolling piston, variable delivery pump line — these pintle check type units do not compromise the proven performance, reliability, flexibility and adaptability of the established line. These units have been laboratory and field operated under heavy duty industrial conditions and proven themselves on di- versified high pressure applications. TYPE "D" UNITS ARE MORE THAN JUST-A-PUMP. Like previous "D" pumps, these units incorporate a positive, variable delivery, multiple radial rolling piston high pressure pump . . . one or two controls (selected from a wide variety) . . . high pressure relief valves ... a gear pump with relief valve . . . and an Oilgear pintle check type suction and return valve for differential or non-differential two- way systems (includes check, directional and relief Figure 2. Circuit for Type D-15030, Using Oilgear two-way pumps, you can eliminate many directional and flow control valves . . . simpli- fy power and control circuits . . . save on piping, fittings, electrical units and wiring . . . cushion flow reversals . . . vary flow infinitely in either These units are built in the same housing as pre- viously built "D-15025" pumps and are dimensionally interchangeable in most cases. If other system con- siderations allow, they can replace existing units and improve machine performance. Figure 1. Oilgear Type DVK-15030-NN Pump (54819) Detailed information on controls (see bulletin 47001) and dimensional installations of pumps with controls are published separately. Note, size 15030 and 15035 are available with the same controls as previous "D-15025" pumps — the size 23030 is available with type (A) air, (M) multi solenoid and (V) servovalve SPECIFICATIONS - TYPE "D" PUMPS t A = Continuous; B = Cyclic; C = Peak * Higher drive speeds can be utilized for some applications with approval by Oilgear Engineering # At cyclic duty pressure Figure 3. Opposite side of Oilgear DVK-15030-NN

Some applications do not require the built-in features included in our "D" pump line. For these applica- tions, we offer a unit that is essentially only a vari- able delivery pump with controls. These "DN" units are available with the same choice of controls as the "D-23030" pump. While not including gear pump, relief valves, suction valve, etc. ; the rugged con- struction design features of the Oilgear "Type D" radial piston pump (that results in top performance, high reliability, etc.) are still included. Not a packaged system like "D" pumps, the applica- tion circuitry for "DN" units...