4SP plunger pump
4SP21ELU
- 7.9Flow, l/min
- 138Pressure, bar
- 1750Speed, rpm
- 2.15Power, kW
60 Hz Rated at a motor speed for 60 Hz mains (North America, parts of South America and Asia).
Specification
- Flow
- 7.9 l/min
- Pressure
- 138 bar
- Speed
- 1750 rpm
- Absorbed power
- 2.15 kW
- Plunger
- 16 mm
- Shaft
- Hollow
- Weight
- 5.3 kg
Kits
Other kits2
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 76031 | Kit, Repair (Includes: 418, 425, 428, 436, 437) | ||
| 76754 | Kit, O-Ring (Includes: 414, 415, 424, 428, 429, 437) |
Valves1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 76976 | Kit, Valve (Includes: 160-164, 166-169, 172) |
Exploded view
Parts list
Positions are the balloon numbers on Cat Pumps' exploded view.
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 5 | 549360 | Screw, HHC Sems (M6 x 14) | 3 |
| 8 | 547153 | Cover, Bearing | |
| 10 | 14041 | O-Ring, Bearing Cover-70D | 1 |
| 11 | 55337 | Seal, Oil | |
| 15 | 14488 | Bearing, Ball, Inner | 1 |
| 26 | 12385 | Ring, Retaining | 1 |
| 27 | 15710 | Bearing, Ball, Outer | 1 |
| 32 | 549726 | Cap, Vented with O-Ring | 1 |
| 33 | 14179 | O-Ring, Oil Filler Cap-70D | 1 |
| 37 | 92241 | Gauge, Oil, Bubble with Gasket-80D | 1 |
| 38 | 44428 | Gasket, Flat, Oil Gauge-80D | 1 |
| 48 | 44842 | Plug, Drain | 1 |
| 49 | 14179 | O-Ring, Drain Plug-70D | 1 |
| 53 | 547099 | Crankcase | 1 |
| 64 | 16948 | Pin, Crosshead | 3 |
| 65 | 49982 | Rod, Plunger | |
| 69 | 126259 | Washer, Oil Seal | 3 |
| 70 | 25301 | Seal, Oil | 3 |
| 88 | 132607 | Washer | 3 |
| 99 | 542405 | Retainer, Plunger (M6 x 35) | 3 |
| 160 | 17428 | O-Ring, Inlet Seat-80D | 3 |
| 161 | 547077 | Seat, Inlet | 3 |
| 162 | 48361 | Backup Ring, Discharge Seat | 3 |
| 163 | 670085 | O-Ring, Discharge Seat-90D | 3 |
| 164 | 547076 | Seat, Discharge | 3 |
| 166 | 547098 | Valve | 6 |
| 167 | 134579 | Spring | 6 |
| 168 | 543988 | Retainer, Spring, Inlet | 3 |
| 169 | 49764 | Retainer, Spring, Discharge | 3 |
| 172 | 142807 | O-Ring, Valve Plug-90D | 3 |
| 174 | 547104 | Plug, Valve with O-Ring (M20) | 3 |
| 188 | 549357 | Screw, HSH (M6 x 60) | 8 |
| 197 | 941516 | Assembly, Garden Hose ( 3/8") | 1 |
| 255 | 30516 | Mount, Bolt Assembly. | 1 |
| 310 | 76976 | Kit, Valve (Includes: 160-164, 166-169, 172) | 1 |
| 401 | 32088 | Handle, Adjustable | 1 |
| 402 | 46570 | Cap, Adjusting | 1 |
| 408 | 33394 | Spring, Pressure | 1 |
| 410 | 549352 | Retainer, Spring | 1 |
| 412 | 46251 | Stem, Piston | 1 |
| 414 | 28338 | Backup Ring, Piston Stem | 1 |
| 415 | 22056 | O-Ring, Piston Stem-70D | 1 |
| 423 | 46249 | Retainer, Valve | 1 |
| 424 | 13966 | O-Ring, Valve Retainer (Outer)-70D | 1 |
| 425 | 46248 | Retainer, Piston | 1 |
| 426 | 46250 | Washer | 1 |
| 428 | 26133 | O-Ring, Piston Retainer-80D | 1 |
| 429 | 17399 | O-Ring, Valve Retainer (Inner)-80D | 1 |
| 435 | 548193 | Valve | 1 |
| 436 | 46253 | Seat | 1 |
| 437 | 13963 | O-Ring, Seat-70D | 1 |
| 438 | 46254 | Seat, Check Valve (ELU Models) | 1 |
| 439 | 13963 | O-Ring, Seat, Check Valve-70D (ELU Models) | 1 |
| 443 | 541060 | Valve, Check with O-Ring (ELU Models) | 1 |
| 444 | 477 | S | 1 |
| 444 | 45924 | Spring (ELU Models) | 1 |
| 446 | 480 | BB | 1 |
| 446 | 460 | Discharge | 483 |
| 446 | 26133 | O-Ring, Discharge Fitting-80D | 1 |
| 460 | 107681 | Fitting, Discharge ( 3/8" NPT[M]) | 1 |
| 468 | 76754 | Kit, O-Ring (Includes: 414, 415, 424, 428, 429, 437) | 1 |
| 470 | 76031 | Kit, Repair (Includes: 418, 425, 428, 436, 437) | 1 |
| 470 | 471 | NBR (ELU Models) | 1 |
| 479 | 46257 | Orifice (1.8mm) | 1 |
| 6107 | Oil, Bottle (21 oz) ISO 68 Hydraulic (Fill to Specific Crankcase Capacity Prior to Start-up) | 1 |
Motor
This pump has a hollow shaft. It fits straight onto the shaft of a hollow-shaft motor or engine, so there is no flange or coupling between them. You need a hollow-shaft motor of at least 2.15 kW.
Flange
None needed: the pump fits straight onto a hollow-shaft motor.
Coupling
None needed: the pump fits straight onto a hollow-shaft motor.