Model: Custom-built deep well pumps
Deep well pumps built to your well: we set the motor power, impeller size and hole spacing to suit your borehole, your duty and your existing pipework.
| Power | Made to order to suit the duty |
|---|---|
| Material | Cast iron or stainless steel |
Not sure this pump fits your duty? Try the pump selector
Most wells are served well by a standard model from our QJ deep well pump table. Some are not. The duty falls between two models, the old pump must be replaced without changing the pipework, or the power supply sets a limit. For those wells we build the pump to order.
| Item | Why it matters | What to tell us |
|---|---|---|
| Motor power | A motor matched to the duty, not oversized, and one that suits a limited supply such as a generator or a small transformer | Flow and head at the duty point, voltage, frequency and phases, and any power limit |
| Impeller size | The impeller is chosen to land on your duty point, so the pump does not waste energy against a throttled valve | Flow and head you need |
| Hole spacing | Flange and bolt-hole spacing made to match your existing riser pipe or fittings, so the new pump bolts straight on | Hole spacing, number and size of holes, or a photo of the flange with a tape measure across it |
Not sure of the head? Our borehole head calculation example shows how to add it up, and the head calculator does the sums for you.
We check your data against the standard range first. If a catalogue model fits, we will say so, because a standard pump is usually the simplest choice. If it does not, we propose the motor power, impeller and hole spacing, and confirm the details with you in writing before production.
For sandy or corrosive water, read our notes on sand in well water and stainless steel deep well pumps, and tell us about it when you send the duty.
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