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4″ Borehole Pumps

4SD4/12 4″ Borehole Pump 1.1kW – 90m Max Head

  • 4″
  • 1.1 kW
  • 90 m head

From R1,300.00

In stock

4" 4SD4 borehole pump, 1.1kW, up to 90m head. Available as a complete set (220V / 380V) or pump end only.

Configuration: choose one
  • Nationwide deliveryShipped from Pretoria
  • 12-month warrantyAgainst manufacturing defects
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Code: BH-4SD4-12 Category:

Overview

The 4SD4/12 is a 4" stainless steel multistage submersible borehole pump from the Vega 4SD4 range (nominal flow around 4 m³/h), delivering heads of up to 90m and flows up to 6 m³/h. Choose a complete set for your power supply, or just the pump end if you are replacing a worn one.

Available options:

  • 220V set + analogue control box: 4SD4/12 pump end + 1.1kW 220V single-phase oil-filled motor + MA analogue control box
  • 220V set + 20Y intelligent controller: 4SD4/12 pump end + 1.1kW 220V single-phase oil-filled motor + 20Y intelligent controller (dry-run protection)
  • 380V 3-phase set + Y1 controller: 4SD4/12 pump end + 1.1kW 380V three-phase oil-filled motor + Y1 digital protection controller
  • Pump end only (no motor): 4SD4/12 pump end (wet end) only – for replacing a worn pump end on an existing 1.1kW motor
  • Motor power: 1.1kW
  • Pump diameter: 4" – fits boreholes with an internal diameter of 100mm or more
  • Stainless steel pump body and shaft

Performance Table:

Flow (m³/h) Flow (l/min) Head (m)
0 0 90
0.6 10 87
1.2 20 85
1.8 30 83
2.4 40 81
3 50 77
3.6 60 72
4.2 70 66
4.8 80 58
5.4 90 49
6 100 38

Choosing the right pump: add the depth to your borehole’s water level, the height up to your tank and about 10% for pipe friction – that’s your total head. Pick a pump whose head at the flow you need is higher than that total. Not sure of your water level or which pump fits? Contact us with your borehole details before ordering.

Which controller? The analogue box is the basic starter; the 20Y adds dry-run protection (recommended for low-yield boreholes); three-phase sets come with the Y1 protection controller. See all Borehole Controllers.

Not included: submersible cable, rope, delivery pipe and base plate.

Performance curve

4SD4/12 · 1.1 kW

02040608010001234567 0 m³/h (0 l/min) → 87 m0.6 m³/h (10 l/min) → 84 m1.2 m³/h (20 l/min) → 82 m1.8 m³/h (30 l/min) → 81 m2.4 m³/h (40 l/min) → 78 m3 m³/h (50 l/min) → 73 m3.6 m³/h (60 l/min) → 66 m4.2 m³/h (70 l/min) → 58 m4.8 m³/h (80 l/min) → 49 m5.4 m³/h (90 l/min) → 39 m6 m³/h (100 l/min) → 27 m Flow (m³/h) Head (m)

Check your duty point Enter the flow you need and the total head (height + pipe friction).

Show the data table
Flow m³/h00.61.21.82.433.64.24.85.46
Flow l/min0102030405060708090100
Head m8784828178736658493927

Source: Vega 4ST & 4SD Borehole 2023 V1 catalogue. Performance at 50 Hz with clean water at 20 °C; actual duty within ISO 9906 tolerances.

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4SD4/12 4″ Borehole Pump 1.1kW – 90m Max HeadFrom R1,300.00
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