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80LPM = 1.3LPS at 88m head Wilo Bore Pump TWI 4.05-21B


3hp/2.2kw Single 1 Phase 3w-PSC.   Max Flow = 108LPM @ 56m head.   Min Flow = 60LPM @ 100m head

Additional information

Wilo 4″ Bore Pump and Motor assembly.

Equivalent to Grundfos SP 5A 21

Assembly includes pump, motor & starter box.

60 liters per min 1 liter per second @ 100m head
72 liters per min 1.2 liters per second @ 94m head
84 liters per min 1.4 liters per second @ 83m head
96 liters per min 1.6 liters per second @ 70m head
108 liters per min 1.8 liters per second @ 56m head

This bore pump has a 2.2kw/3hp 3w-PSC 1 phase motor.
The 3w-PSC 1 phase motor requires a starter box which comes standard with this model.

PSC motors have a lower starting current, so are the preferred motor when powered by a generator or solar.

There are other accessories that you will need to install your bore pump which include bore cap, drop cable, support cable, riser pipe, pressure gauge, etc.  These are listed below

Please be sure that your pump and accessory selection is correct before you purchase as the onus is on you. This is why I have included suggestions below with links, to ensure you select the correct size accessories for this model pump.


Options to purchase with your kit to suit this pump

Bore Cap
This model has a 1 1/2 (40mm) discharge thread, so if you are using 40mm pipe diameter then a 1.5″ Bore Cap would be recommended.

Shroud Adapter

A shroud adapter is only needed if you are installing a 4″ pump down 6″ or larger casing.
If using 32mm pipe diameter then a  32 x 100mm (1 1/4″ riser) PVC Shroud Adaptor would be recommended.

Electrical Cable
The info below is a guide only, you must check with your electrician on cable size.
1 Phase Cable (3-wire/4 core) – 1.5mm sq cable up to 20m, 2.5mm sq cable up to 40m, 4mm sq cable up to 60m
Always check with your electrician. He will do volt drop calculations to meet site requirements to comply with AS.

Stainless Steel Support Cable – Available in 3mm cable or 4mm cable

Stainless Steel Support Cable Grips/Clamps – Available in 3mm or 4mm to suit S/S Cable

Pressure Gauges Liquid Filled 63mm – Available in 0-800 kPa, 0-1000 kPa, 0-1600 kPa and 0-2500 kPa

Flexible Riser Pipe
– Series 100 is for depths up to 100.The sizes are 32 mm and 50 mm internal diameter.
– Series 200 is for depths up to 250m. The sizes range from 40mm to 200mm internal diameter.
– As well as the Couplings, ties, joiners and installation roller.

2 year Warranty

Bore pump wet ends are universal which means they can be fitted to other brand 4″ motor.  If you would like a Franklin Motor instead of a Wilo, just ask and we can arrange this for you.

Wilo pumps are German made and are identical to the Grundfos.  We have a Grundfos / Wilo comparison chart available upon request.

Weight 1 kg





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