GP7255A
A German-made reciprocating triplex plunger pump.
Features
Spheroidal cast iron crankcase with sight glass and vented dipstick; forged, through-hardened, ground and polished crankshaft; bronze connecting rods; hardened stainless steel plunger bases; solid ceramic plungers; nitrile seals with fabric reinforcing; stainless steel valves and nickel-plated Spheroidal cast iron manifold.
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SPECIFICATIONS
| U.S. | Metric | |
|---|---|---|
| Flow (Continuous) | 65.8 GPM | 250 L/min |
| Maximum Discharge Pressure (Continuous) | 1500 PSI | 100 bar |
| Crankshaft Speed (Continuous) | 700 RPM | |
| Flow (Intermittent) | 80 GPM | 303 L/min |
| Maximum Discharge Pressure (Intermittent) | 2000 PSI | 140 bar |
| Crankshaft Speed (Intermittent) | 851 RPM | |
| Maximum Inlet Pressure | 145 PSI | 10 bar |
| Maximum Temperature | 140 °F | 60 °C |
| Plunger Diameter | 2.17″ | 55 mm |
| Stroke | 2.05″ | 52 mm |
| Crankshaft Diameter | 48 mm | |
| Crankshaft Rotation | Top of Pulley Towards Manifold | |
| Key Width | 0.6″ | 14 mm |
| Crankshaft Mounting | Either Side | |
| Inlet Ports | (2) 2-1/2″ NPT | |
| Discharge Ports | (2) 1-1/4″ NPT | |
| Crankcase Oil Capacity | 1.6 gal | 6.0 L |
| Weight | 374 lbs. | 170 kg |
| Key Component Material | ||
| Manifold | Nickel-Plated Cast Iron | |
| Plungers | Solid Ceramic Oxide | |
| Valves | Duplex and Stainless Steel | |
| Seals | Nitrile with Fabric Reinforcing | |
| Gear End | Spheroidal Cast Iron | |
Click the image to enlarge
HORSEPOWER SPECIFICATIONS
| RPM | GPM | 800 PSI | 1000 PSI | 1300 PSI | 1500 PSI | 2000 PSI* |
|---|---|---|---|---|---|---|
| 479 | 45.0 | 24.8 | 31.0 | 40.3 | 46.6 | 62.1* |
| 531 | 49.9 | 27.5 | 34.4 | 44.7 | 51.6 | 68.8* |
| 585 | 55.0 | 30.3 | 37.9 | 49.3 | 56.9 | 75.9* |
| 638 | 60.0 | 33.1 | 41.4 | 53.8 | 62.1 | 82.8* |
| 700 | 65.8 | 36.3 | 45.4 | 59.0 | 68.1 | 90.8* |
| 851* | 80.0* | 44.1* | 55.2* | 71.7* | 82.8* | 110.3* |
*Intermittent Duty Only
Horsepower Requirements
The ratings shown are the power requirements for the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above.
We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements use the following formulas:
Electric HP = (GPM X PSI)/1450
as HP = (GPM X PSI)/1100
*Engine power varies based on horizontal or vertical orientation, as well as by makes and models from each manufacturer.
REPAIR KITS
| ITEM# | PART# | DESCRIPTION | Qty. |
|---|---|---|---|
| Plunger Packing Kit – Part #09220 | |||
| 38A | 13156 | O-Ring | 3 |
| 38B | 07721 | O-Ring | 3 |
| 39A | 07723 | Grooved Ring | 3 |
| 42 | 07711 | V-Sleeve | 6 |
| Oil Seal Kit – Part #09221 | |||
| 32 | 07624 | Radial Shaft Seal | 3 |
| 33A | 07627 | O-Ring | 3 |
| Inlet Valve Assembly Kit – Part #09659 | |||
| 51 | 05594 | Inlet Valve Assembly | 1 |
| 56A | 07658 | O-Ring | 1 |
| 56B | 07635 | Support Ring | 1 |
| Large Discharge Valve Kit – Part #09660 | |||
| 52 | 05600 | Discharge Valve Assembly | 1 |
| 55 | 05647 | Valve Spacer | 1 |
| 56A | 07658 | O-Ring | 1 |
| 56B | 07635 | Support Ring | 1 |
| Small Discharge Valve Kit – Part #09661 | |||
| 51B | 05450 | Valve Spring | 1 |
| 51C | 05247 | Valve Plate | 1 |
| 51D | 05596 | O-Ring | 1 |
| 52F | 05599 | O-Ring | 1 |
| 56A | 07658 | O-Ring | 1 |
| 56B | 07635 | Support Ring | 1 |
Repair Kits Available
The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.
