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Mains Units

4DNX plunger pump

4DNX25GSI

  • 9.5Flow, l/min
  • 207Pressure, bar
  • 3450Speed, rpm
  • 3.83Power, kW

60 Hz Rated at a motor speed for 60 Hz mains (North America, parts of South America and Asia).

Cat Pumps 4DNX pump

Specification

Flow
9.5 l/min
Pressure
207 bar
Speed
3450 rpm
Absorbed power
3.83 kW
Plunger
14 mm
Shaft
Hollow
Weight
4.9 kg

Data sheet (PDF, Cat Pumps)

Kits

Other kits3

Part numberDescriptionPer pumpSuppliers
31767Kit, O-Ring (Includes: 414, 415, 424, 428, 429 
76179Kit, Repair (Includes: 418, 425, 428, 436, 437) 
990394Kit, Oil Drain 

Valves2

Part numberDescriptionPer pumpSuppliers
76146Kit, Check Valve (Includes: 438, 439, 443, 444, 446) 
76976Kit, Valve (Includes: 160-164, 166-169, 172) 

Seal kits1

Part numberDescriptionPer pumpSuppliers
76975Kit, Seal (Includes: 98, 106, 121, 125) 

Exploded view

Cat Pumps exploded view of the 4DNX pump, with position numbers
Cat Pumps' drawing. The numbers match the positions in the parts list below. Open the picture to zoom in.

Parts list

Positions are the balloon numbers on Cat Pumps' exploded view.

PosPart numberDescriptionQty
5 549360 Screw, HH (M6 x 14)3
8 547153 Cover, Bearing1
10 14041 O-Ring, Bearing Cover-70D1
11 55337 Seal, Oil1
15 14488 Bearing, Ball, Inner1
20 547048 Rod, Connecting3
24 549608 Plug, Oil Cap1
25 49883 Crankshaft, 3/4", (6.8 mm)1
27 15710 Bearing, Ball, Outer1
31 549726 Cap, Vented with O-Ring (Rain Cap)1
32 547961 Cap, Oil Filler with O-Ring1
33 14179 O-Ring, Oil Filler Cap-70D1
37 92241 Gauge, Bubble Oil with Gasket1
38 44428 Gasket, Flat Flex, Oil Gauge-80D1
48 44842 Plug, Drain1
49 14179 O-Ring, Drain Plug-70D1
53 49801 Crankcase1
64 46229 Pin, Crosshead1
65 542402 Rod, Plunger3
70 47215 Seal, Oil3
90 547091 Plunger (M14 x 25.5)3
98 46730 Washer, Seal-90D3
99 542405 Retainer, Plunger (M6 x 35)3
100 46233 Retainer, Seal3
120 49804 Case, Seal3
121 13976 O-Ring, Seal Case-70D3
125 49824 Seal, High-Pressure3
160 17428 O-Ring, Inlet Seat-80D3
161 547077 Seat, Inlet3
162 48361 Backup Ring, Discharge Seat3
163 670085 O-Ring, Discharge Seat-90D3
164 547076 Seat, Discharge3
166 547098 Valve6
167 134579 Spring6
168 543988 Retainer, Spring, Inlet3
169 49764 Retainer, Spring, Discharge3
172 142807 O-Ring, Plug-90D3
174 547104 Plug, Valve with O-Ring (M20 x 1.5)3
185 49763 Head, Manifold with Integral Unloader Body1
188 549357 Screw, HSH (M6 x 60)6
197 941516 Assembly, Garden Hose ( 3/8" NPT[M] x 3/4" GH[F])1
249 30520 Assembly, Adapter Mount1
255 30516 Assembly, Bolt Mount1
283 990394 Kit, Oil Drain1
300 76975 Kit, Seal (Includes: 98, 106, 121, 125)1
310 76976 Kit, Valve (Includes: 160-164, 166-169, 172)1
402 547798 Cap, Adjusting1
403 45070 Nut, Lock (M18 x 1)1
408 32094 Spring, Pressure1
410 549352 Retainer, Spring1
412 45694 Stem, Piston (M5)1
414 20184 Backup Ring, Piston Stem1
415 14190 O-Ring, Piston Stem-70D1
423 46249 Retainer, Valve1
424 13966 O-Ring, Valve Retainer (Outer)-70D1
425 547799 Retainer, Piston1
426 46250 Washer1
428 26133 O-Ring, Piston Retainer-80D1
429 17399 O-Ring, Valve Retainer (Inner)-80D1
435 547800 Valve/Ball Assembly1
436 49664 Seat1
437 13963 O-Ring, Seat-70D1
438 46254 Seat, Check Valve1
439 13963 O-Ring, Check Valve Seat-70D1
443 49765 Valve, Check1
444 45924 Spring1
444 446 26133
460 107681 Fitting, Discharge ( 3⁄8" NPT[M])1
460 107681 Fitting, Discharge ( 3⁄8" NPT[M])
468 31767 Kit, O-Ring (Includes: 414, 415, 424, 428, 4291
469 7332 Injector, Chemical Fixed1
469 7332 Injector, Chemical Fixed1
470 76179 Kit, Repair (Includes: 418, 425, 428, 436, 437)
471 76146 Kit, Check Valve (Includes: 438, 439, 443, 444, 446)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 3.83 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.

Other Cat Pumps 4DNX pumps

4DNX27GSI