Oreal CK Stainless Steel Sump Pumps

Where to Use Oreal CK Sump Pumps

The CK range is well suited to fixed sump pit installations in basements, cellars, plant rooms, and commercial car parks where a low to medium volume of water needs to be removed on a regular basis. The stainless steel construction makes these pumps a better long-term choice than plastic-bodied alternatives in environments where the water contains light silt, cleaning residue, or low concentrations of surface contaminants. They are manual-operation pumps, so in unattended installations they are typically wired to a separate float switch that triggers the pump automatically when the water level rises.

For domestic basement drainage, the CK45M handles the majority of typical sump duties. Its compact footprint (273mm high, 167mm wide) makes it practical in narrow sump chambers, and the integrated non-return valve simplifies installation by preventing backflow through the discharge line when the pump stops. Facilities managers specifying pumps for commercial or light-industrial sumps may find the CK100M or CK150M more appropriate, given their higher flow rates and the ability to pump against heads up to 15 or 18 metres respectively. You can read more about sizing a sump pump correctly in our guide, What Size Sump Pump Do I Need?

For a more detailed overview of how basement sump systems work and what the UK Building Regulations require for habitable basement conversions, our Basement Sump Pump Guide covers the key considerations including pump specification, discharge routes, and backup provision. If your application involves sewage or macerated waste rather than clean or dirty water drainage, our sewage pumps category has the appropriate options.

Frequently Asked Questions

What is the difference between the CK45M and the other models in this range?

The CK45M is the smallest pump in the range, with a 0.25 kW motor, a maximum flow rate of 150 litres per minute, and a maximum head of 7.5 metres. It also has a smaller 1 1/4-inch (32mm) outlet and comes with an integrated non-return flap valve as standard. The CK55M, CK100M, and CK150M are physically larger, share a 1 1/2-inch (38mm) outlet, and cover heads up to 11, 15, and 18 metres respectively. The CK45M suits smaller sumps and compact installation spaces; the larger models suit applications with higher flow demands or longer discharge runs.

Do these pumps include a float switch for automatic operation?

No. All four CK models are manual pumps, meaning they run continuously while powered. For automatic level-controlled operation, you need to wire the pump through a separate float switch, which cuts power when the water drops below a set level and restores it when the level rises again. AES Rewinds stocks a range of float switches compatible with 230v single-phase pumps of this type.

What type of water can the CK range handle?

All CK models are rated for clean water, black water, and dirty water duties. They can pass solids up to 10mm in diameter, which covers the typical silt, grit, and light debris found in sump pits. These pumps are not designed for sewage or effluent containing larger solids or fibrous material, and they should not be used with aggressive chemicals or liquids above 50°C.

What cable and outlet does each model come with?

All models are supplied with 10 metres of power cable as standard. The CK45M has a 1 1/4-inch (32mm) outlet with hose tail and non-return valve included. The CK55M, CK100M, and CK150M have a 1 1/2-inch (38mm) outlet with hose tail included. Non-return valves are not included on the larger models and should be specified separately if required in your installation.

What is the maximum submersion depth for CK pumps?

All models in the CK range have a maximum submersion depth of 5 metres. This is sufficient for the vast majority of sump pit applications. If your installation requires deeper submersion than this, contact our team to discuss alternatives from the wider sump pump range.

Are these pumps suitable for continuous duty?

The CK range is designed for intermittent-duty sump drainage rather than continuous high-volume pumping. In a properly sized installation controlled by a float switch, the pump will run in short cycles as the sump fills and empties, which is the normal and recommended duty cycle for this type of pump. If your application requires continuous or near-continuous operation, speak to our team on 01252 515169 to discuss a more suitable specification.

If you need advice on which CK model suits your installation, or if you have questions about float switch compatibility, pipework sizing, or discharge routes, call the AES Rewinds team on 01252 515169 or email sales@aesrewinds.com. You can also browse the full sump pump category to compare the CK range against other options.