The FPS Iguazu Sump 635 is a complete, ready-to-install packaged pump station that automatically removes groundwater, light grey water and flood water.
It pairs a 190 litre high-grade MDPE chamber with the automatic AMA Drainer 301 submersible pump, which has a maximum flow rate of 166 litres per minute and a maximum rated head of 6.5 metres. It is our most straightforward and cost-effective station, and the one most often specified for basement waterproofing and domestic flood resilience.
Water can enters through a perimeter channel, a 110mm pipe connection, or the opening at the top of the chamber. The chamber can also be drilled to allow groundwater to enter if installed externally. Typical installations are basements, garages, patios, driveways and gardens, and it integrates well into perimeter flood protection systems alongside flood barriers and flood walls.
Not suitable for toilet waste. This is a clean, grey and flood water station, suitable for grey water from showers and basins, but it must not be connected to a W.C. or any foul drainage. For toilet waste, see our foul range: the Sump Foul, Foul Pro and FEKA.
The pump is switched by a float on an arm, which reduces the risk of snagging compared with a hanging float. The chamber fills, the float rises, the pump runs and then turns off, clearing a useful depth on each cycle rather than switching on and off over a few centimetres. Because it is installed below ground and operates on its own, it does not need anyone present, which is the main advantage over a portable puddle pump during a flood. One customer told us their Iguazu ran automatically during flooding while they were away in Australia and kept the property dry.
You will see in the gallery that some installations use a drilled lid so water can enter the chamber. In these instances the clients had two lids, one with holes they would deploy when there was flood warning, and the original lid for day-to-day use. A finished installation can be very discreet, with neat drainage channels and only an inspection chamber lid visible.
The AMA Drainer 301 has a maximum flow rate of 166 litres per minute and a maximum rated head of 6.5 metres.
These are the two ends of the pump curve rather than a single duty point: at 6.5 metres the flow has fallen to zero, and the full 166 litres per minute is only available with no lift at all. What you actually get sits between the two, where the curve meets the resistance of your pipework. Our pump performance calculator works that out for your pipe run, and how to read a pump curve explains the principle.
In practice this is why the 635 is our most popular station. That flow is comfortably enough for the great majority of duties, and it is well matched to the size of the chamber, which matters more than raw output.
Understanding flow rate: To put a pump’s flow rate into perspective, a typical outside tap delivers around 10 to 15 litres of water per minute.
A pump rated at 100 litres per minute could therefore move roughly the same volume of water as 7 to 10 outside taps running at once.
A pump with far more capacity than the inflow empties the chamber in seconds and restarts moments later, and that short cycling can wear pumps out.
The AMA Drainer 301 is a KSB pump with a strong reliability record, using a compact arm float that works in narrow chambers without snagging, a thermally protected motor and 10mm solids handling. It draws 0.43 kW (P1) for a 0.18 kW (P2) motor output.
Full pump performance figures are in the specification table further down this page.
The chamber should be installed on a concrete bed and surrounded with concrete to prevent flotation and movement. Depending on the desired installation, these chambers are often connected with fixed PVC delivery pipe, or with suction and delivery hose, matched to the outlet size.
The chamber outlet terminates in a 1¼ inch male thread and discharges through 32mm pipework, so use 32mm rigid pipe and fittings secured with solvent weld, or suction and delivery hose with a 32mm female hose tail. The hose option is made up from three parts: a hose tail, the hose, and a hose clip. Add them to your order alongside the station.
When installed internally, the chamber would usually be fitted with a recessed, sealed lid, allowing the surrounding floor finish to be continued across it while helping to contain odours and moisture.
Supplied as a complete plug and play unit, ready for installation. Some on-site work is required, including connecting components, drilling entry holes for cables and routing wiring through a suitable conduit. Read our guide to installing a sump pump.
Images are indicative only. Photographs may show optional extras, accessories or pipework that are not included in this listing, and the chamber is shown cut open in some images to reveal the internal components. Your chamber is supplied whole. Please refer to the specification and the list of what is included above.
For requirements this range does not cover, larger chambers are available by quote. See below-ground pump stations and tanks.
Pump station design and installation is site specific. You should always consult a suitably qualified engineer to determine the correct configuration and installation method for your application, and a qualified electrician for the electrical connection.
We supply equipment. We do not provide site-specific design or installation advice over the phone, because the correct configuration depends on levels, flows, ground conditions and the discharge route. Where a project needs calculations, a specification or a design, see our engineering review service.
Watch below as we install a Packaged Pump Station into a garage floor, to assist with removing any floodwater that may enter.
In this instance, the property was suffering some water ingress into the garage through the walls, and also through a non-FPS Flood barrier.
The Sump Pump was installed into the garage floor to provide a passive solution to remove water from the garage.
In this video, we showcase how a sump pump operates to protect a small patio area surrounded by a low wall and flood barriers. Despite these precautions, rainwater, roof runoff, and groundwater can still lead to pooling.
