15LPM = 0.25LPS at 117m head Pentax Bore Pump 4S25-26


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Pentax 4 inch Bore Pump with Franklin Electric motor assembly.

Assembly includes pump,  motor and starter only.

13 liters per min 0.21 liters per second @ 127m head
15 liters per min 0.25 liters per second @ 117m head
18 liters per min 0.3 liters per second @ 98m head
20 liters per min 0.33 liters per second @ 81m head
22 liters per min 0.36 liters per second @ 65m head

This 4S25-26 has a 0.75kw/1hp 3-wire Franklin Electric submersible motor.
The 3-wire 1 phase require a starter box which comes standard when you buy this combination.

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 1/4 (32mm) discharge thread, so if you are using 32mm pipe diameter then a 1.25″ 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 60m, 2.5mm sq cable up to 110m, 4mm sq cable up to 180m
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.

Single 1 Phase Motor Protection
If you purchase a single phase 2-wire or 3-wire kit, then you will need a Pumptec as your motor protection device.

2 Year Warranty

Additional information

Weight 1 kg
Litres Per Minute



Franklin Electric, Pentax

kW / Hp

0.75 / 1


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