The EVAK Residox 400 is a stainless steel ultra-low-level manual puddle pump, designed to remove standing water down to approximately 1 mm above the floor.
This variant is a manual version, giving the operator full control over when the pump runs, making it suitable for attended flood response, controlled site work and hire fleets across residential, commercial and light-construction settings.
The 400 is the standard model in the Residox range. The maximum flow rate is 250 litres per minute and the pump has an 11-metre head, providing sufficient capacity for most domestic and commercial flood-recovery jobs, basement clearance, internal floor drainage and general nuisance water.
For larger areas, longer hose runs or uphill discharge, the higher-output Residox 750 is the more appropriate choice.
The Residox is designed for jobs that conventional submersible pumps are not suitable for. Where a standard pump stops drawing once the water drops below its inlet or strainer, the Residox continues pumping down to approximately 1 mm above the floor, leaving surfaces almost dry.
That makes it well suited to flood recovery, basement clearance and any application where minimal residual water is the priority.
Cast iron pump housing, stainless steel outer case and handle, alloy motor and seal casing, and an abrasion-resistant Hytrel vortex impeller.
The 2 mm free passage handles water typical of flood conditions. A rubberised NBR suction base allows the pump to sit directly on tiles, finished concrete and other delicate surfaces without causing damage.
Unlike some other puddle pumps (such as the Tsurumi LSC range), the Residox does not need to be primed with water poured into the pump body. Place it down in the water to be removed, switch it on, and pump.
The pump is fully submersible and should always be operated submerged or with water present at the suction base and should not be left to run dry.
Choose 110V for site use with a transformer, or 230V for domestic and general-purpose applications.
✔ Pumps down to approximately 1 mm above floor level
✔ Manual operation, full operator control
✔ Stainless steel outer case and handle
✔ Cast iron pump housing and Hytrel vortex impeller
✔ 2 mm free passage handles small debris
✔ Rubberised NBR base, surface-safe on finished floors
✔ No priming required
✔ 250 l/min flow, 11 m head
✔ Available in 110V or 230V
✔ 1-year manufacturer's warranty
✅ 1 x EVAK Residox 400 Manual Puddle Pump
✅ 1 x 10m heavy-duty rubber power cable
✅ 1 x 2 inch (50mm) hose tail
Optional: add a 90° elbow hose tail to prevent hose kinking and maintain optimum flow.
| Model | Evak Residox 400 | Evak Residox 750 |
| Manual/ Auto | Manual | Manual |
| Outlet/ mm | 50 | 50 |
| Kw | 0.48 | 0.75 |
| Volt | 110/230 | 110/230 |
| Flow ltr/min | 250 | 330 |
| Head /m | 11 | 16 |
| On Level/ mm | N/A | N/A |
| Off Level/ mm | N/A | N/A |
| Free Passage | 2 | 2 |
| W x L x H /mm | 351 x 214 x 214 | 370 x 214 x 214 |
| Weight /Kg | 12 | 17.8 |
Floodandwaterpumps.co.uk has been specially designed to simplify the types of pumps into categories to make choosing the best pump for your requirements easy.
We are often asked how to attach the hose to a pump, and have created this 'how-to' video to demonstrate. The pump and accessories listed are all available at floodandwaterpumps.co.uk
Puddle pumps are a special type of submersible pump that do not need to be fully submersed in water. They can pump to very low levels of water (i.e a puddle) without the pump overheating or becoming damaged. This removes the need for a chamber to be dug.
