Hydraulic submersible pump
A submersible driven by hydraulic oil from an excavator auxiliary circuit or a portable power pack, with no electrics in the water at all. For debris-laden water, tidal work and flood response.
Features
- With no electric motor there is nothing to flood, so the pump survives conditions that end an electric submersible's life.
- It can run dry indefinitely, which suits intermittent inflow and flood response where nobody is watching the level.
- The driving circuit has to be matched on flow in l/min and pressure in bar — a machine circuit outside the pump's window either stalls it or overspeeds it.
- Debris handling is markedly better than an electric unit of the same size, including rag, silt and gravel.
- Hose weight and length are the practical limits on deployment depth, and a hose burst puts oil in the water.
- A power pack version makes the pump independent of any machine, at the cost of a second engine to fuel.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Maximum flow | 40 - 250 | m³/h | Compare at the delivery head required. |
| Required oil flow | 40 - 180 | l/min | Must sit inside the host machine's circuit. |
| Required oil pressure | 150 - 250 | bar | Outside the window the pump stalls or overspeeds. |
| Maximum solids size | 30 - 75 | mm | The main advantage over an electric unit. |
| Dry running | permitted, unlimited | Why it suits unattended flood duty. |