Attributes
| Model Number | GP7128-4100 |
|---|---|
| Product Type | pump |
| Horsepower Chart | {"charts":[{"title":"Horsepower Specifications","columns":["RPM","GPM","3000PSI","4000PSI","5000PSI","5945PSI"],"rows":[["300","7.2","14.9","19.9","24.8","29.5"],["400","9.6","19.9","26.5","33.1","39.4"],["550","13.1","27.1","36.1","45.2","53.7"],["600","14.3","29.6","39.5","49.3","58.6"],["650","15.5","32.1","42.8","53.5","63.6"],["700","17.9","37.0","49.4","61.7","73.4"],["750","17.9","37.0","49.4","61.7","73.4"]]}]} |
| Repair Kits | {"name":"Plunger Packing Kit","part_number":"09464A","components":[{"item":"38A","part_number":"06577","description":"O-Ring, Seal Case","qty":"3"},{"item":"38B","part_number":"07693","description":"Support Ring","qty":"3"},{"item":"38C","part_number":"06736","description":"O-Ring","qty":"3"},{"item":"38D","part_number":"12056","description":"Support Ring","qty":"3"},{"item":"39A","part_number":"03785","description":"Grooved Ring","qty":"3"},{"item":"39B","part_number":"03786","description":"Flinger","qty":"3"},{"item":"39C","part_number":"06584","description":"Clip Ring","qty":"3"},{"item":"40","part_number":"05442","description":"Guide Ring","qty":"3"},{"item":"41","part_number":"05440","description":"Support Ring","qty":"6"},{"item":"42","part_number":"05439","description":"Spiral Ring","qty":"6"}]}, {"name":"Valve Assembly Kit","part_number":"09520A","components":[{"item":"51B","part_number":"05193","description":"O-Ring","qty":"3"},{"item":"51C","part_number":"04725","description":"Inlet Valve Seat","qty":"3"},{"item":"51D","part_number":"13130","description":"Valve Plate","qty":"3"},{"item":"51E","part_number":"07062-0100","description":"Valve Spring","qty":"3"},{"item":"52B","part_number":"05193","description":"O-Ring","qty":"3"},{"item":"52C","part_number":"04726","description":"Discharge Valve Seat","qty":"3"},{"item":"52D","part_number":"13130","description":"Valve Plate","qty":"3"},{"item":"52E","part_number":"07062-0100","description":"Valve Spring","qty":"3"},{"item":"58A","part_number":"07700-0001","description":"O-Ring, Viton","qty":"3"},{"item":"58B","part_number":"07693","description":"Support Ring","qty":"3"}]}, {"name":"Oil Seal Kit","part_number":"09221","components":[{"item":"32","part_number":"07624","description":"Radial Shaft Seal","qty":"3"},{"item":"33A","part_number":"07627","description":"O-Ring","qty":"3"}]} |
| General Documents | {"text":"Giant Industries Limited Warranty","url":"https://www.giantpumps.com/wp-content/uploads/2025/08/Giant-Industries-Limited-Warranty.pdf"} |
Specifications
| Flow | 17.9 GPM, 67.7 L/min |
|---|---|
| Maximum Discharge Pressure | 5945 PSI, 410 bar |
| Crankshaft Speed | 750 RPM |
| Power | 73.2 HP, 54.6 KW |
| Max Temperature | 140 °F, 60 °C |
| Inlet Port Size | (2) 1-1/4" BSP |
| Discharge Port Size | (2) 3/4" BSP |
| Plunger Diameter | 1.1 in., 28 mm |
| Stroke | 2.1 in., 52 mm |
| Maximum Inlet Pressure | 29 PSI, 2 bar |
| Crankshaft Diameter | 1.9 in., 48 mm |
| Crankshaft Rotation | Top of Pulley Towards Manifold |
| Key Width | 0.6 in., 14 mm |
| Crankshaft Mounting | Either Side |
| Crankcase Oil Capacity US | 1.7 gal, 6.5 L |
| Weight | 434 lbs., 197 kg |
| NPSHR | 21.3 Ft.-head, 6.5 mWs |
| Manifold Material | Stainless Steel |
| Plunger Packing Kit Part # | 09464A |
| Valve Assembly Kit Part # | 09520A |
| Oil Seal Kit Part # | 09221 |