ZW-K plunger pump
ZW-K 4025 S
Part number 6307 0154
- 15Flow, l/min
- 172Pressure, bar
- 1450Speed, rpm
- 4.8Power, kW
50 Hz Rated at a motor speed for 50 Hz mains (UK, Europe, Africa, Australia, most of Asia).

Specification
- Flow
- 15 l/min
- Pressure
- 172 bar
- Speed
- 1450 rpm
- Absorbed power
- 4.8 kW
- Shaft
- Solid, Ø24 mm
- Weight
- 7.2 kg
Kits
Plungers1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 2409.0124 | Ceramic plunger kit | 1 |
Water seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 5019.0652 | Water seal kit | 1 |
Oil seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 5019.0683 | Oil seal kit | 1 |
Valves1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 5025.0011 | Valve kit | 1 |
Exploded view
Parts list
Positions are the balloon numbers on Comet's exploded view.
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 1 | 5033.0010 | Easy Start Kit | 1 |
| 2 | 3202.0319 | Easy Start Cap | 1 |
| 3 | 1210.0463 | O-Ring Ø2x6 | 1 |
| 4 | 3003.0033 | Easy Start Ball Ø9/32” | 1 |
| 5 | 1210.0463 | O-Ring Ø2x6 | 1 |
| 6 | 1802.0277 | Easy StartSpring | 1 |
| 7 | 3200.0017 | Cap 1/8X8 | 1 |
| 8 | 3218.0492 | Brass Pump Manifold Ø18 Start Kit + Easy Start | 1 |
| 9 | 1210.0460 | O-Ring Ø2,4x4,3 | 1 |
| 10 | 2409.0122 | Check Valve | 1 |
| 11 | 1802.0197 | Spring | 1 |
| 12 | 2409.0123 | Check Valve Kit | 1 |
| 13 | 1210.0402 | O-Ring | 1 |
| 14 | 1210.0398 | O-Ring | 1 |
| 15 | 3410.0324 | Injector Body Kit Ø2,1 M22X1,5 | 1 |
| 15 | 3410.0296 | Injector Body Kit Ø2,1 NPT | 1 |
| 16 | 3609.0191 | Screw M8x60 | 8 |
| 17 | 3202.0018 | Plug G1/8” | 2 |
| 18 | 2811.0086 | Washer Ø21,2x27x1,5 | 1 |
| 19 | 3202.0015 | Plug G1/2” | 1 |
| 20 | 2811.0084 | Washer Ø16,7x22x1,5 | 1 |
| 21 | 3200.0007 | Plug G3/8” | 1 |
| 22 | 1210.0046 | O-Ring Ø2,62x17,13 | 6 |
| 23 | 3009.0087 | Suct./Del. Valve Seat | 6 |
| 24 | 3604.0017 | Suct./Del. Valve | 6 |
| 25 | 1802.0177 | Suct./Del. Valve Spring | 6 |
| 26 | 1205.0025 | Suct./Del. Valve Cage | 6 |
| 27 | 1220.0030 | Suct./Del. Valve Ass.y kit | 6 |
| 28 | 1210.0048 | O-Ring Ø2,62x20,24 | 6 |
| 29 | 3202.0312 | Cap Kit | 6 |
| 30 | 3609.0088 | Screw M5x10 | 3 |
| 31 | 1004.0012 | Crankcase Flange | 1 |
| 32 | 0402.0329 | Alluminum Cover | 1 |
| 33 | 1210.0386 | O-Ring Ø3,53x44,04 | 1 |
| 34 | 3019.0011 | Outer Seeger | 1 |
| 35 | 0438.0069 | Ball Bearing Ø20x52x15 | 1 |
| 36 | 0403.0141 | Pump Crankcase | 1 |
| 37 | 3200.0051 | Oil Dipstick | 1 |
| 38 | 0600.0048 | Special Bolt | 3 |
| 39 | 2811.0080 | Washer Ø8,2x14x1,5 | 3 |
| 40 | 0202.0040 | Ceramic Bushing Ø18 | 3 |
| 41 | 2812.0038 | Washer | 3 |
| 42 | 1210.0227 | O-Ring Ø1,78x5,28 | 3 |
| 43 | 2409.0105 | Piston Guides | 3 |
| 44 | 3011.0014 | Gudgeon Pin Ø8x25 | 3 |
| 45 | 0205.0050 | Con. Rod Assembly | 3 |
| 46 | 3019.0033 | Outer Seeger Ø28 | 1 |
| 47 | 3201.0026 | Oil Indicator | 1 |
| 48 | 1210.0333 | O-Ring Ø1,78x23,52 | 1 |
| 49 | 1210.0621 | O-Ring Ø3x94 | 1 |
| 50 | 0402.0220 | Crankcase Cover | 1 |
| 51 | 3609.0180 | Screw M6x50 | 4 |
| 52 | 0001.0473 | Throughshaft Ø24 | 1 |
| 53 | 1602.0045 | Key 8x7x25 | 1 |
| 54 | 0438.0071 | Ball Bearing Ø25x62x17 | 1 |
| 55 | 3020.0012 | Inner Seeger | 1 |
| 56 | 3019.0006 | Outer Seeger C72 | 1 |
| 57 | 0019.0094 | Oil Seal Ø25x62x10/7 | 1 |
| 58 | 1210.0441 | O-Ring Ø2x14 | 1 |
| 59 | 3200.0007 | Cap G3/8” | 1 |
| 60 | 0019.0095 | Oil Seal 15x24x5 | 3 |
| 61 | 1210.0223 | O-Ring 1,78x26,7 | 3 |
| 62 | 0009.0276 | Packing Retainer Ø18 (up to serial 38243513) | 3 |
| 62 | 0009.0368 | Packing Retainer Ø18 (from serial 38243514) | 3 |
| 63 | 1241.0028 | Packing 18x22x5,5 | 3 |
| 64 | 0009.0214 | Back Ring Ø18 (up to serial 38243513) | 3 |
| 65 | 1241.0022 | Packing Ø18 | 3 |
| 66 | 0009.0193 | Packing Head Ring Ø18 | 3 |
| 67 | 1215.0402 | Reg. Valve Kit + Seat 180 2610 | 1 |
| 68 | 1817.0053 | Pressure knob | 1 |
| 69 | 3200.0017 | Cap 1/8X8 | 1 |
| 70 | 2803.0424 | Detergent Coupling | 1 |
| 71 | 3003.0026 | Detergent Ball | 1 |
| 72 | 1802.0180 | Detergent Spring | 1 |
| 73 | 2803.0435 | Detergent Coupling Kit | 1 |
Motor
A 4-pole motor of at least 4.8 kW drives this pump at 1450 rpm.
| Motor | kW | rpm | Frame | Class | A at 400 V | Suppliers |
|---|---|---|---|---|---|---|
| RNE 132Sa4 | 5.5 | 1450 | IEC 132S | IE3 | 10.6 | |
| RN 132Sa4 | 5.5 | 1430 | IEC 132S | IE1 | 11.4 | |
| RN 112b4 uprated | 5.5 | 1420 | IEC 112 | IE1 | 12.2 |
The contactor and overload relay for each motor are on the motor's page.
Flange
The flange bolts the pump to the face of the motor. It depends on the motor's IEC frame.
- IEC 112, 28 mm shaft (RN 112b4) No Comet flange listed for this motor.
- IEC 132, 38 mm shaft (RNE 132Sa4, RN 132Sa4) No Comet flange listed for this motor.
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 112, 28 mm motor shaft No Comet coupling listed: you need one for a 28 mm motor shaft to 24 mm pump shaft.
- IEC 132, 38 mm motor shaft No Comet coupling listed: you need one for a 38 mm motor shaft to 24 mm pump shaft.