WBS plunger pump
WBS 1920
Part number 02.6091.97.3
- 7.6Flow, l/min
- 130Pressure, bar
- 1725Speed, rpm
- 1.8Power, kW
60 Hz Rated at a motor speed for 60 Hz mains (North America, parts of South America and Asia).

Specification
- Flow
- 7.6 l/min
- Pressure
- 130 bar
- Speed
- 1725 rpm
- Absorbed power
- 1.8 kW
- Max water temperature
- 60 °C
- Plunger
- 15 mm
- Shaft
- Solid, Ø24 mm
- Inlet
- 3/8 BSP
- Outlet
- 3/8 BSP
- Weight
- 5.8 kg
- Oil
- 0.5 litres, SAE 75 - W 90
Kits
Valves1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 019826973 | Valve kit 141 |
Oil seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 049836973 | Radial ring kit 64 |
Water seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 049843973 | Seal kit 73, Ø15 mm plungers |
Parts list
For parts not covered by the kits above, ask a supplier and quote the model WBS 1920 and part number 02.6091.97.3.
Motor
Rated at 1725 rpm, the speed of a 4-pole motor on a 60 Hz supply. The motors below are listed with their 50 Hz figures and are at least 1.8 kW. Order the one you pick wound for 60 Hz and your supply voltage.
| Motor | kW | rpm | Frame | Class | A at 400 V | Suppliers |
|---|---|---|---|---|---|---|
| RNE 100a4 | 2.2 | 1455 | IEC 100 | IE3 | 5.9 | |
| RN 100a4 | 2.2 | 1420 | IEC 100 | IE1 | 4.9 | |
| RN 90Lb4 uprated | 1.85 | 1410 | IEC 90L | IE1 | 4.3 | |
| RNM 90Lb4 | 1.85 | 1390 | IEC 90L | Single-phase | 13.2 at 230 V |
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 90, 24 mm shaft (RN 90Lb4, RNM 90Lb4) No Bertolini flange listed for this motor.
- IEC 100, 28 mm shaft (RNE 100a4, RN 100a4) No Bertolini flange listed for this motor.
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 90, 24 mm motor shaft No Bertolini coupling listed: you need one for a 24 mm motor shaft to 24 mm pump shaft.
- IEC 100, 28 mm motor shaft No Bertolini coupling listed: you need one for a 28 mm motor shaft to 24 mm pump shaft.
Other Bertolini WBS pumps
WBS 1335-FWBS 1421-FWBS 1520WBS 1735WBS 1735-FWBS 1821-FWBS 1832WBS 2121-FWBS 2235-FWBS 2320WBS 2335WBS 2532