VIKING BUILT DOUBLE PUMPS

Like getting two pumps in one! SP-1470-C VIKING BUILT DOUBLE PUMPS Viking double pumps are ideally suited to many applications in the industrial and mobile markets. Two independent pumping units are operated from a single power source to reduce equipment costs and simplify installation. System flexibility is maintained as each pumping unit can be operated at a different pressure without affecting the other. A total of 96 different double pump combinations are available to match your requirements. A special version of the double pump has an integral hi-lo circuit. This arrangement has the advantage of providing a fast cycle time and at the same time reduces the HP required by unloading the high volume pump when it is not needed. A double pump with an integral hi-lo circuit basically consists of a high volume and low volume set of pumping elements, a built-in unloading valve and a built-in check valve. The hydraulic circuit is arranged to provide rapid advance, feed and rapid return. The total volume from both sets of pumping elements is delivered until the work load is contacted. At this point, system pressure increases causing the unloading valve to function. Flow from the high volume set of pumping elements is directed back to the suction side of the pump at minimum pressure. The low volume set of pumping elements continues to deliver flow for the high pressure feed part of the operation. Both sets of pumping elements deliver flow on the return stroke. VIKING PUMP

SPECIFICATIONS PUMP SECTION NOMINAL CAPACITY @ 1750 RPM DISPLACEMENT MAXIMUM SPEED GPM L/MIN IN³/REV CM³/REV RPM R/MIN 0417.06.24.008.13 3600 3600 0418.13.49.017.28 3600 3600 0425.18.68.024.39 4000 4000 0435.25.96.033.54 4000 4000 0450.36 1.37.048.79 4000 4000 0470.51 1.92.067 1.10 4000 4000 0518.70 2.7.094 1.54 3600 3600 0525 1.0 3.8.139 2.27 4000 4000 0535 1.4 5.3.194 3.18 4000 4000 0550 2.0 7.6.277 4.54 4000 4000 0570 2.8 10.6.388 6.36 4000 4000 0510 4.0 15.1.548 8.98 3600 3600 0514 5.6 21.2.761 12.47 3600 3600 0729 2.8 10.6.390 6.39 3600 3600 0741 4.0 15.1.548 8.98 4000 4000 0758 5.6 21.2.765 12.53 4000 4000 0782 8.0 30.3 1.096 17.96 4000 4000 0711 11.2 42.4 1.530 25.07 3600 3600 0716 16.0 60.6 2.192 35.92 3600 3600 * Note: Ductile iron construction and combinations of the 04 and 05 pump sections are available, consult factory. DOUBLE PUMP MODEL NUMBERING CODE GP - 05 18 25 - E 0 - B EXTERNAL GEAR PUMP PRINCIPLE GEAR O.D. *FIRST PUMP CAPACITY (SMALLER) *SECOND PUMP CAPACITY (LARGER) DRIVE EQUIPMENT B = FOOT MOUNTED BRACKET D = BASE MOUNTED DIRECT DRIVE M = C-FLANGE MOTOR DRIVE M4 = FOUR-BOLT MOTOR DRIVE DESIGN SERIES G = HEAVY DUTY H = HEAVY-DUTY WITH HI-LO CIRCUIT * FOR TOTAL PUMP CAPACITY ADD THE GPM RATING OF EACH SECTION: (1825 = 0.7 + 1.0 for TOTAL of 1.7 GPM @ 1750 GPM) COUNTERCLOCKWISE ROTATION NOT AVAILABLE FOR DESIGN SERIES C SHAFT ROTATION (VIEWED FROM SHAFT END) O = CLOCKWISE 1 = COUNTER CLOCKWISE 2

PUMP SELECTION FIGURE 3 To determine whether a pump is rated for continuous or intermittent duty, use Figures 2, 3 and/or 4 to arrive at the number of units for each pumping section. These values should be based on the maximum pressure expected from each pumping section during simultaneous operations. Add the units for each pumping section together. Use this total number of units and Figure 1 to arrive at a service cycle rating. 300 250 0514 0510 0570 0550 EXAMPLE: GP-052510 with the 25 section at 1500 PSIG and the 10 section at 200 PSIG. Figure 3 shows the 25 section yields 88 units and the 10 section yields 50 units, a total of 138 units. Figure 1 shows that the pump is rated for continuous duty. UNITS 200 150 0535 0525 FIGURE 1 SERVICE CYCLE TOTAL UNITS Continuous Intermittent 150 Maximum GP-04 and GP-05 1050 Maximum GP-07 300 Maximum GP-04 and GP-05 2100 Maximum GP-07 100 50 0518 FIGURE 2 250 0470 0450 FIGURE 4 200 1100 0716 0711 0782 1000 UNITS 150 0435 900 800 0758 100 0425 UNITS 700 600 0741 50 0418 500 0417 0 500 1000 1500 2000 2500 400 300 200 0729 100 The solid portion of each pump section line indicates the continuous operation parameters of that pump section. The dashed portion indicates the intermittent parameters. 3

HORSEPOWER REQUIREMENTS Figures 5, 6, 7, 8, 9 and 10 relate required horsepower to discharge pressure for each pump section. Total horsepower required for the double pump is found by adding the requirements for each pump section. EXAMPLE: Using the pump from the first example (page 3) operating at 1750 RPM (Figure 7), the 25 section yields a horsepower requirement of 1.1 and the 10 section yields a requirement of 0.6. Total horsepower required is 1.7. FIGURE 5 FIGURE 6 1.00 1750 RPM 0470 0450 1.00 3450 RPM 0470 0450.75.50.25 0425 0418 0435.75.50.25 0435 0425 0418 0417 0417 0 500 1000 1500 2000 2500 0 500 1000 1500 2000 2500 FIGURE 7 FIGURE 8 1.00 1750 RPM 0514 0510 0570 0550 1.00 3450 RPM 0514 0510 0570 0550.75.50.25 0518 0535 0525.75.50.25 0518 0535 0525 0 500 1000 1500 2000 2500 4

FIGURE 9 FIGURE 10 12 0716 0782 24 0711 1750 RPM 1750 RPM 11 22 0716 0711 0782 10 9 0758 20 18 0758 8 16 7 6 5 4 3 0729 0741 14 12 10 8 6 0729 0741 2 4 1 2 GENERAL INFORMATION STANDARD CONSTRUCTION Quality materials and precision manufacturing are used in every pump with the following materials as standard: Head, Casing and Bracket cast iron Gears Heat-treated steel (GP-04 and GP-07) Heat-treated powder metal (GP-05) Shafts Case hardened steel Bearings Anti-friction, needle O-Rings and Lip Seal Buna-N For variations of the above construction, consult the factory for price and delivery. ROTATION The double pumps are directional, and rotational information (viewed from shaft end) is essential. If rotation information is omitted from an order, the pump will be furnished with clockwise rotation. A bi-directional rotation feature is available as an option. DISCHARGE PRESSURE The hydraulic gear pumps are especially designed for operating many types of hydraulic equipment which require pressures up to 2500 PSI with intermittent service. INLET PRESSURE Sizing the inlet piping so the fluid velocity is less than 5 ft./sec. will insure satisfactory operation of the pump. Positive inlet pressure is limited to 15 PSI maximum. TEMPERATURE RANGE The Viking hydraulic gear pump will function properly up to a maximum of 225 F. The recommended operating temperature for hydraulic service is between 50 and 150 F. HYDRAULIC OIL The best performance can be obtained by utilizing an industrial grade hydraulic oil. Operating viscosity should be between 100 and 300 SSU. Temperature should not exceed 150 F. for optimum life of the hydraulic oil. PUMP LIFE Pump life is a factor of many parameters, mainly pressure, speed and duty cycle. Temperature, contamination and type of hydraulic oil also have a definite effect. For actual life expectancy, consult the factory with specific conditions. FILTER To extend maximum pump life and insure the highest pump operating efficiency, keep the system clean and free of contaminating elements. On a hydraulic system it is recommended that a return line filter be installed having a maximum of 10 micron rating. FACTORY TESTING Every pump is performance tested. In addition, each pump is backed by a full factory warranty. OPTIONAL CONSTRUCTION FEATURES Contact our sales department for recommendations and special construction features available. In addition to the model number, all options must be specified in writing on the order. APPLICATION INFORMATION To assist us in supplying a pump which will provide optimum service, the following information should be furnished: capacity needed, discharge pressure, inlet conditions, name of fluid, viscosity and operating temperature. 5

PUMP DIMENSIONS, Series GP-04, GP-05 Pump Model Overall Length (L) GP-041818 GP-051818 4.98 GP-041825 GP-051825 5.06 GP-041835 GP-051835 5.16 GP-041850 GP-051850 5.30 GP-041870 GP-051870 5.50 GP-051810 5.80 GP-051814 6.20 GP-042525 GP-052525 5.12 GP-042535 GP-052535 5.22 GP-042550 GP-052550 5.38 GP-042570 GP-052570 5.58 GP-052510 5.88 GP-052514 6.28 GP-043535 GP-053535 5.32 GP-043550 GP-053550 5.48 GP-043570 GP-053570 5.68 GP-053510 5.98 GP-053514 6.38 GP-045050 GP-055050 5.62 GP-045070 GP-055070 5.82 GP-055010 6.10 GP-055014 6.52 GP-047070 GP-057070 6.02 GP-057010 6.32 GP-057014 6.72 GP-051010 6.62 GP-051014 7.02 GP-051414 7.42 HEAVY-DUTY DOUBLE PUMP SEPARATE SUCTION & DISCHARGE PORTS COMMON SUCTION, SEPARATE DISCHARGE PORTS SEPARATE SUCTION, COMMON DISCHARGE PORT STANDARD OPTIONAL OPTIONAL HEAVY-DUTY DOUBLE PUMP WITH HI-LO CIRCUIT WHEN OPERATING 10 OR 14 SECTION PUMPS ABOVE 1800 RPM OR HANDLING LIQUIDS WITH VISCOSITIES ABOVE 300 SSU, CONSULT FACTORY FOR PORT RECOMMENDATIONS. * ½ NPT SUCTION PORT IS STANDARD ON ALL PUMP MODELS EXCEPT THOSE WITH A 14 SECOND SECTION (GP-05xx14-CO). THEN ¾ NPT PORT IS STANDARD. 6

PUMP DIMENSIONS, Series GP-07 Pump Model/Size Overall Length (L) Port Locations A B C GP-072929 9.33 3.42 5.96 3.17 GP-072941 9.45 3.42 6.08 3.17 GP-072958 9.62 3.42 6.25 3.17 GP-072982 9.86 3.42 6.49 3.17 GP-072911 10.19 3.42 6.82 3.17 GP-072916 10.69 3.42 7.32 3.17 GP-074141 9.57 3.54 6.20 3.29 GP-074158 9.74 3.54 6.37 3.29 GP-074182 9.98 3.54 6.61 3.29 GP-074111 10.31 3.54 6.94 3.29 GP-074116 10.81 3.54 7.44 3.29 GP-075858 9.91 3.71 6.54 3.46 GP-075882 10.15 3.71 6.78 3.46 GP-075811 10.48 3.71 7.11 3.46 GP-075816 10.98 3.71 7.61 3.46 GP-078282 10.39 3.95 7.02 3.70 GP-078211 10.72 3.95 7.35 3.70 GP-078216 11.22 3.95 7.85 3.70 GP-071111 11.05 4.28 7.68 4.03 GP-071116 11.55 4.28 8.18 4.03 GP-071616 12.05 4.78 8.68 4.53 HEAVY-DUTY DOUBLE PUMP SEPARATE SUCTION & DISCHARGE PORTS COMMON SUCTION, SEPARATE DISCHARGE PORTS SEPARATE SUCTION, COMMON DISCHARGE PORT STANDARD OPTIONAL OPTIONAL HEAVY-DUTY DOUBLE PUMP WITH HI-LO CIRCUIT WHEN OPERATING 11 OR 16 SECTION PUMPS ABOVE 1800 RPM OR HANDLING LIQUIDS WITH VISCOSITIES ABOVE 300 SSU, CONSULT FACTORY FOR PORT RECOMMENDATIONS. 7

MOUNTING OPTIONS Viking Double and Hi-Lo Double pumps offer efficient gear set combinations allowing maximum pressure with minimum horsepower. Hi-Lo Double pumps include a highly-efficient sequencing valve and a heat-treated guided poppet check valve. GP-05 B DRIVE FOOT-BRACKET MOUNTED A sturdy cast iron bracket, cast and machined by Viking, assures accurate fit with the pump. Mountings are available for all sizes of Double and Hi-Lo Double pumps. GP-07 B DRIVE FOUR-BOLT MOTOR MOUNTED UNIT Integral pump and motor units help reduce on-site assembly costs and provide maximum compactness where space is at a premium. The 4-bolt mounting can be provided with AC or DC motors. Available for Series GP-04 and GP-05 only. GP-04 & GP-05 M4 DRIVE C-FLANGE MOTOR MOUNTED UNIT Viking Double and Hi-Lo Double pumps in combination with the Nema C flange bracket and flexible coupling provide an easily assembled, compact unit. The cast iron adapter bracket is accurately machined for precise shaft alignment. GP-07 M DRIVE Rev. 5/05 8