Draper 230V Multi Stage Surface Mounted Water Pump, 90L/min, 1100W

When the job calls for sustained high-pressure water delivery rather than emergency flood response, the Draper SP90MS is the tool of choice. This self-priming multi stage surface mounted water pump delivers up to 90 litres per minute at a remarkable maximum head height of 46 metres – far beyond the capability of single-stage pumps at this price point – making it ideal for pressurising irrigation systems, boosting mains pressure, supplying water to elevated points, and a wide range of home and garden water management applications.

Powered by a 1,100W 230V motor and weighing just 10.5kg, the SP90MS runs from a standard mains socket without the noise, fuel costs, or exhaust fumes of a petrol equivalent. Double-insulated corrosion and rustproof impellers are built for long service life, while thermal overload protection safeguards the motor automatically against overheating. A weatherproof on/off switch allows safe outdoor installation and operation, and the 25mm output aperture connects to standard pump hose fittings for a straightforward installation.

Key Features & Benefits

Multi Stage Design – 46m Maximum Head Height

The SP90MS's defining advantage over single-stage surface pumps is its multi stage pressurising design. By passing water through multiple impeller stages in sequence, the pump builds significantly higher pressure than a single impeller could achieve – reaching a maximum head height of 46 metres. That's enough to supply water to the top of a three-storey building, pressurise an irrigation system covering a large garden, boost mains pressure across a commercial property, or pump from a low-level tank to an elevated storage tank well above ground. For any application where pressure and head height matter, the multi stage design is a fundamental advantage.

Self-Priming Operation

Like the petrol pumps in the Draper Expert range, the SP90MS is self-priming – it draws water up from the source automatically without needing the suction line manually filled before starting. Position the suction inlet in the water source, switch on, and the pump pulls water through the line and builds pressure immediately. This simplifies installation, speeds up deployment, and makes the pump straightforward to use for non-specialists.

90L/min Maximum Output

At 90 litres per minute, the SP90MS delivers 5,400 litres per hour – enough to supply a drip irrigation network, feed multiple sprinkler heads simultaneously, fill a water storage tank efficiently, or provide boosted pressure supply to a property with multiple outlets. Flow rate and head height are interdependent: maximum flow is achieved at low head, and maximum head is reached at minimal flow. For most garden and home pressurisation applications, the operating point will sit comfortably between these extremes.

Thermal Overload Protection

If the motor temperature rises beyond safe operating limits – due to a blocked impeller, running dry, or sustained operation in hot conditions – thermal overload protection automatically cuts power to the motor before damage occurs. Once cooled, the pump can be restarted. This protection safeguards a significant investment and prevents the most common cause of electric pump failure in demanding applications.

Weatherproof On/Off Switch

The integrated weatherproof on/off switch is rated for outdoor installation, allowing the pump to be mounted and operated in exposed garden or outbuilding locations without the switch requiring additional waterproofing or housing. Safe, convenient, and appropriate for permanent or semi-permanent outdoor installation.

Corrosion and Rustproof Double-Insulated Impellers

The multi stage impeller assembly is constructed from corrosion and rustproof materials with double insulation, providing long service life even when pumping water from outdoor sources that may contain dissolved minerals, mild sediment, or seasonal organic material. Built to maintain performance across years of regular use rather than requiring early replacement.

Lightweight at 10.5kg

At 10.5kg, the SP90MS is light enough for one person to install, position, and relocate without assistance. Combined with its compact surface-mounted design, it suits installation in outbuildings, pump chambers, under decking, and in utility spaces where a larger, heavier pump would be impractical.

25mm Outlet – Standard Fitting Compatibility

The 25mm (1 inch) output aperture and hose adaptor is the standard size for garden and light commercial irrigation and water supply systems, compatible with widely available pump hose and fittings.

Mains Electric – Quiet, Clean, and Fuel-Free

Unlike petrol pumps, the SP90MS runs silently from a standard 230V mains supply with no fuel costs, no exhaust fumes, no oil changes, and no pull-cord starting. For applications where mains power is available and continuous or scheduled operation is required, an electric pump is quieter, cleaner, and more economical to run than a petrol equivalent.

Full Specification

What's in the Box

• Draper SP90MS Multi Stage Surface Mounted Water Pump

Who Is the Draper SP90MS For?

Home & Garden Irrigation – Pressurise drip irrigation systems, garden sprinklers, and hose reel systems from a water butt, tank, or borehole, covering large gardens and allotments from a single pump with the head height to supply remote zones.

Mains Pressure Boosting – Supplement low mains water pressure in properties affected by poor supply pressure, feeding showers, taps, and appliances at adequate flow and pressure from a pressurisation system.

Water Tank Transfer & Storage Filling – Pump water from ground-level tanks or rainwater harvesting systems to elevated header tanks, roof-level storage, or pressurisation vessels. The 46m head handles multi-storey buildings with ease.

Smallholding & Allotment Water Supply – Deliver water from a pond, stream, borehole, or storage tank to irrigation systems, animal troughs, and wash-down points across a site, without mains connection to the delivery points.

Commercial Property & Facilities Management – Boost pressure supply to outbuildings, car wash points, and facilities that suffer from low flow at distance from the mains connection.

Swimming Pool & Water Feature Circulation – Supply water to filtration systems, waterfalls, and fountain heads at the pressure and flow rate needed for effective circulation and display.

Frequently Asked Questions

What is a multi stage pump and why is 46m head significant? A multi stage pump passes water through two or more impeller stages in sequence, each adding pressure, rather than relying on a single impeller. This allows it to achieve much higher discharge pressure than a single-stage pump of similar size and power. 46 metres of head equates to approximately 4.5 bar of pressure – far above the 1–2 bar of a typical single-stage garden pump – making the SP90MS suitable for applications like boosting mains pressure, supplying elevated tanks, and operating high-pressure irrigation systems that a standard surface pump couldn't handle.

What is the difference between head height and flow rate? Head height and flow rate are inversely related: a pump delivers maximum flow at zero head (no vertical lift or pipe resistance), and maximum head at zero flow (pump just holds pressure against a closed system). Real-world operating conditions sit between these extremes. The SP90MS's 46m maximum head and 90L/min maximum flow mean it performs strongly across a wide range of garden and home pressurisation applications, but for specific system design, match your required pressure and flow at your operating point.

Can the SP90MS run dry? No. Running a pump without water flowing through it damages seals and impellers rapidly. Always ensure the suction inlet is submerged and water is flowing before starting. The thermal overload protection will cut the motor if it overheats, but this does not fully protect against dry-run damage. A suction filter and appropriate installation to prevent running dry are recommended.

What is the maximum particle size it handles? The SP90MS passes particles up to 1mm in diameter. It is designed for clean or lightly filtered water only – not for dirty water, silt, or debris. For pumping from open ponds, ditches, or flood water containing sediment, a trash pump or dirty water pump is the appropriate choice.

Can I leave it permanently installed outdoors? The weatherproof on/off switch allows outdoor installation, and the corrosion-resistant impeller construction supports outdoor use. For longer-term outdoor installation, protect the motor body from direct rainfall where possible – a simple pump cover or housing in an outbuilding significantly extends service life. Always follow the manufacturer's installation guidance.

Is this suitable as a submersible pump? No. The SP90MS is a surface mounted pump and must not be submerged. It draws water via a suction inlet from a separate water source. For submersible applications, a dedicated submersible pump is required.