High Pressure Plunger Pump · Frame size 4SP 4SP21ELR
This triplex (three plunger rods) positive displacement, reciprocating plunger pump is constructed with a brass manifold, 304 stainless steel valve assemblies, solid ceramic plungers and standard NBR (Buna-N) seals and O-rings. "R" pump models include an integral pressure regulating valve.
Technical specifications
| Flow rate | 7.9 l/min |
|---|---|
| Operating pressure | 138 bar |
| Speed | 1,750 min⁻¹ |
| Inlet port | 3/8" NPT(F) |
| Discharge port | 3/8" NPT(M) |
| Shaft diameter | 5/8" (hollow shaft) |
| Material | Brass |
Downloads
CAD files
Spare parts
Click an item in the drawing or in the parts list to add it to your request list. We turn it into a quotation – no order is placed.
On the request list: 0 · for this pump: 0 Open request list →
4 kits bundle wearing parts of this pump ↓
Parts list
| Item | Part no. | Description | Qty | Add to request list |
|---|---|---|---|---|
| 5 | 549360 | Screw, HH (M6 x 14)STCP | 3 | |
| 8 | 547153 | Cover, BearingAL | 1 | |
| 10 | 14041 | O-Ring, Bearing Cover - 70DNBR | 1 | |
| 11 | 55337 | Seal, Oil, CrankshaftNBR | 1 | |
| 15 | 14488 | Bearing, Ball, InnerSTL | 1 | |
| 20 | 547020 | Assembly Rod, ConnectingTNM | 3 | |
| 25 | 132605 | Crankshaft, 5/8", (8.1 mm) (Models 4SP21ELR, ELU)CM | 1 | |
| 26 | 12385 | Ring, Retaining, BearingSTL | 1 | |
| 27 | 15710 | Bearing, Ball, OuterSTL | 1 | |
| 32 | 549726 | Cap, Vented with O-Ring (Rain Cap) | 1 | |
| 33 | 14179 | O-Ring, Oil Filler Cap - 70DNBR | 1 | |
| 37 | 92241 | Gauge, Oil, Bubble with Gasket - 80D 1 - 2PC | 1 | |
| 38 | 44428 | Gasket, Flat, Oil Gauge - 80DNBR | 1 | |
| 48 | 44842 | Plug, DrainNY | 1 | |
| 49 | 14179 | O-Ring, Oil Filler Cap - 70DNBR | 1 | |
| 53 | 547099 | CrankcaseAL | 1 | |
| 64 | 16948 | Pin, CrossheadCM | 3 | |
| 65 | 49982 | Rod, PlungerBB | 3 | |
| 69 | 126259 | Washer, Oil SealSTCP | 3 | |
| 70 | 25301 | Seal, Oil - 80DNBR | 3 | |
| 88 | 132607 | WasherS | 3 | |
| 90 | 132606 | Plunger (M16 x 24.6) (Models 4SP21ELR, ELU)CC | 3 | |
| 98 | 46730 | Washer, Seal - 90DNBR | 3 | |
| 99 | 542405 | Retainer, Plunger (M6 x 35)S | 3 | |
| 100 | 44869 | Retainer, SealPVDF | 3 | |
| 106 | 48222 | Seal, Low-Pressure with S-SpringNBR | 3 | |
| 120 | 132608 | Case, Seal (Models 4SP21ELR, ELU)BB | 3 | |
| 121 | 13977 | O-Ring, Seal Case - 70D (Models 4SP21ELR, ELU)NBR | 3 | |
| 125 | 547157 | Seal, High-Pressure (Models 4SP21ELR, ELU)SNG | 3 | |
| 160 | 17428 | O-Ring, Inlet Seat - 80DNBR | 3 | |
| 161 | 547077 | Seat, InletS | 3 | |
| 162 | 48361 | Backup Ring, SeatD | 3 | |
| 163 | 670085 | O-Ring, Discharge Seat - 90DNBR | 3 | |
| 164 | 547076 | Seat, DischargeS | 3 | |
| 166 | 547098 | ValveS | 6 | |
| 167 | 134579 | SpringS | 6 | |
| 168 | 543988 | Retainer, Spring, InletPVDF | 3 | |
| 169 | 49764 | Retainer, Spring, DischargePVDF | 3 | |
| 172 | 142807 | O-Ring, Valve Plug - 90DNBR | 3 | |
| 174 | 547104 | Plug, Valve (M20 x 1.5) with O-RingBB | 3 | |
| 185 | 132973 | Head, Manifold (Models 4SP21ELR, ELU)FBB | 1 | |
| 188 | 549357 | Screw, HSH (M6 x 60)STCP | 8 | |
| 197 | 941516 | Assembly, Garden Hose (3 /8" NPT[M] x 3/4" GH[F])BB | 1 | |
| 255 | 30516 | Assembly, Bolt MountSTZP | 1 | |
| 401 | 32088 | Handle, Adjustable (Not Shown) 1 and tighten using a wrench.NY | ||
| 402 | 46570 | Cap, Adjusting 1 11. Insert spring retainer and spring into the body.BB | 1 | |
| 408 | 33394 | Spring, Pressure 1 12. Thread the adjusting cap into the body and set for system pressure.STZP | ||
| 410 | 549352 | Retainer, Spring 1 Injecting Pressure Chemical Draw Across OrificeSTCP | ||
| 412 | 46251 | Stem, Piston 1 NOTE: If unit is infrequently used or periodically stored, O-rings may become dryBB | ||
| 414 | 28338 | Backup Ring, Piston Stem 1 and will need to be replaced.PTFE | 1 | |
| 415 | 22056 | O-Ring, Piston Stem - 70D 1 NOTE: Optimum performance of Chemical Injector occurs with a 35 ft.NBR | ||
| 423 | 46249 | Retainer, Valve 1 NOTE: This pump has an internally bypassed regulator and if the pump is operatedBB | ||
| 424 | 13966 | O-Ring, Valve Retainer (Outer) - 70D 1 with no flow out the nozzles (100% bypass), heat damage will occur to the seals andNBR | ||
| 425 | 46248 | Retainer, Piston 1 valve retainers in a short period of time, requiring premature replacement.BB | ||
| 426 | 46250 | Washer 1 REGULATING DEVICES | ||
| 428 | 26133 | O-Ring, Piston Retainer - 80D 1 An integral regulator or unloader with built-in bypass is part of the dischargeNBR | ||
| 429 | 17399 | O-Ring, Plunger Retainer - 80DNBR | ||
| 435 | 548193 | Valve 1 fixed chemical injector is available. (See back page for proper model identifications)S | ||
| 436 | 46253 | SeatS | 1 | |
| 437 | 13963 | O-Ring, Seat - 70D 1 OPERATIONNBR | ||
| 438 | 46254 | Seat, Check Valve (ELU Models) 1 Pump should be purged of air before commencing with operation. Liquid mustNY | ||
| 439 | 13963 | O-Ring, Seat - 70D 1 OPERATIONNBR | ||
| 443 | 541060 | Valve, Check with O-Ring 1 BypassBB | ||
| 444 | 45924 | Spring, Check valveS | ||
| 446 | 26133 | O-Ring, Piston Retainer - 80D 1 An integral regulator or unloader with built-in bypass is part of the dischargeNBR | ||
| 460 | 107681 | Fitting, Discharge [3/8" NPT(M)] 1 BY-PASSBB | ||
| 468 | 76754 | Kit, O-Ring (Includes: 414, 415, 424, 428, 429, 437) StandardNBR | ||
| 471 | 76146 | (ELU Models) 1 process until the desired system pressure is reached.NBR | ||
| – | 13978 | O-Ring, Seal Case - 70D (Models 4SP29ELR, ELU)NBR | 3 | |
| – | 43243 | Seal, Low-Pressure with S-SpringNBR | 3 | |
| – | 43245 | Seal, High-Pressure with S-Support (Model 530)SNG | 3 | |
| – | 133987 | Crankshaft, 5/8", (8.5 mm) (Models 4SP29ELR, ELU)CM | 1 | |
| – | 133988 | Plunger (M18 x 24.6) (Models 4SP29ELR, ELU)CC | 3 | |
| – | 133989 | Retainer, Seal (Models 4SP29ELR, ELU)PVDF | 3 | |
| – | 133990 | Case, Seal (Models 4SP29ELR, ELU)BB | 3 | |
| – | 133991 | Head, Manifold (Models 4SP29ELR, ELU)FBB | 1 | |
| – | 6132 | Oil, Crankcase, Bottle 1l | 1 |
in the request list covered by a requested kit
Seal and valve kits
A kit bundles the wearing parts of one assembly. Selecting it highlights the items it covers in the drawing and the parts list – once requested, they stay marked.
Seal kits
-
Seal kit
76295
NBRMedium Nitrile (Buna-N)
contains 4 items · one kit per pump
Parts list
- 98 46730 Washer, Seal - 90D 3×
- 106 48222 Seal, Low-Pressure with S-Spring 3×
- 121 13977 O-Ring, Seal Case - 70D (Models 4SP21ELR, ELU) 3×
- 125 – Seal, High-Pressure (Models 4SP21ELR, ELU) 3×
-
Seal kit
76968
NBRMedium Nitrile (Buna-N)
contains 4 items · one kit per pump
Parts list
- 98 46730 Washer, Seal - 90D 3×
- 106 48222 Seal, Low-Pressure with S-Spring 3×
- 121 13977 O-Ring, Seal Case - 70D (Models 4SP21ELR, ELU) 3×
- 125 547157 Seal, High-Pressure (Models 4SP21ELR, ELU) 3×
Repair kits
-
Repair kit
76031
NBRMedium Nitrile (Buna-N)
contains 4 items · one kit per pump
Parts list
- 425 46248 Retainer, Piston 1 valve retainers in a short period of time, requiring premature replacement. 1×
- 428 26133 O-Ring, Piston Retainer - 80D 1 An integral regulator or unloader with built-in bypass is part of the discharge 1×
- 436 46253 Seat 1×
- 437 13963 O-Ring, Seat - 70D 1 OPERATION 1×
Valve kits
-
Valve kit
76976
NBRMedium Nitrile (Buna-N)
contains 10 items · one kit per pump
Parts list
- 160 17428 O-Ring, Inlet Seat - 80D 3×
- 161 547077 Seat, Inlet 3×
- 162 48361 Backup Ring, 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×
More models in frame size 4SP
4SP21EL
- Flow rate
- 7.9 l/min
- Operating pressure
- 138 bar
- Speed
- 1,750 min⁻¹
- Material
- Brass
4SP21ELU
- Flow rate
- 7.9 l/min
- Operating pressure
- 138 bar
- Speed
- 1,750 min⁻¹
- Material
- Brass
4SP29ELR
- Flow rate
- 10.8 l/min
- Operating pressure
- 83 bar
- Speed
- 1,750 min⁻¹
- Material
- Brass
4SP29ELU
- Flow rate
- 10.8 l/min
- Operating pressure
- 83 bar
- Speed
- 1,750 min⁻¹
- Material
- Brass