Engine driven water pumps are petrol or diesel powered pumps used where mains electricity is unavailable or impractical. They are typically used on construction sites, in agriculture, for flood response and anywhere large volumes of wate...
Engine driven water pumps are petrol or diesel powered pumps used where mains electricity is unavailable or impractical. They are typically used on construction sites, in agriculture, for flood response and anywhere large volumes of water need to be moved quickly. Because they run independently of a power supply, they are well suited to remote locations and temporary works. These pumps sit above the water and draw it through a suction hose, delivering high flow rates for dewatering, water transfer and site drainage. Our range includes compact petrol site pumps through to heavy-duty diesel and trash pumps for dirty water and solids.
An engine driven water pump uses a built-in petrol or diesel engine to drive the pump, rather than relying on mains electricity. This makes them fully portable and independent of any external power source.
They are surface-mounted pumps, meaning they sit outside the water and draw it in via a reinforced suction hose before discharging it through a delivery hose. This setup makes them ideal for temporary pumping, mobile use, and situations where submersible pumps are not practical.
If the pump needs to sit in the water or operate continuously in one location, a submersible pump is usually the better option.
The deeper read: what's in this range, how to pick, and when to talk to us before you buy.
Engine driven pumps are typically used where power is not available or where mobility is required. Common applications include:
They are also often used alongside flood defence systems as a backup in case of power failure, particularly on sites where resilience is critical.
Petrol vs Diesel Engine Pumps
Choosing between petrol and diesel depends on how the pump will be used.
Petrol engine pumps
Diesel engine pumps
For most users, petrol pumps are the more common choice. Diesel becomes more relevant for contractors, hire fleets and large-scale agricultural use.
Clean Water vs Trash Pumps
Not all engine driven pumps handle the same type of water.
Using the wrong type of pump will reduce performance and can lead to blockages or damage, so matching the pump to the water type is important.
Flow Rate, Head and Performance
When selecting a pump, two key factors need to be considered:
High flow pumps are used for moving large volumes over short distances. Higher head pumps are needed where water has to be lifted vertically or pushed over longer pipe runs.
In real installations, pipe length, fittings and bends will all reduce performance, so published figures should always be treated as a guide rather than an exact output.
Suction Lift and Setup
Because engine driven pumps sit above the water, they rely on suction to draw water into the pump.
In practical terms, suction lift should be kept to around 6 metres or less for reliable operation. Beyond this, pumps may struggle to prime or lose performance.
A proper setup includes:
If water needs to be lifted from greater depth, a submersible pump is usually the better solution.
Solids Handling and Strainers
Engine driven pumps use a strainer fitted to the end of the suction hose to control what enters the pump.
Unlike submersible pumps, the solids handling is largely dictated by the external strainer rather than an internal filter, so it can be adjusted depending on the application.
Choosing between petrol and diesel depends on how the pump will be used.
Petrol engine pumps
Diesel engine pumps
For most users, petrol pumps are the more common choice. Diesel becomes more relevant for contractors, hire fleets and large-scale agricultural use.
Not all engine driven pumps handle the same type of water.
Using the wrong type of pump will reduce performance and can lead to blockages or damage, so matching the pump to the water type is important.
When selecting a pump, two key factors need to be considered:
High flow pumps are used for moving large volumes over short distances. Higher head pumps are needed where water has to be lifted vertically or pushed over longer pipe runs.
In real installations, pipe length, fittings and bends will all reduce performance, so published figures should always be treated as a guide rather than an exact output.
Because engine driven pumps sit above the water, they rely on suction to draw water into the pump.
In practical terms, suction lift should be kept to around 6 metres or less for reliable operation. Beyond this, pumps may struggle to prime or lose performance.
A proper setup includes:
If water needs to be lifted from greater depth, a submersible pump is usually the better solution.
Engine driven pumps use a strainer fitted to the end of the suction hose to control what enters the pump.
Unlike submersible pumps, the solids handling is largely dictated by the external strainer rather than an internal filter, so it can be adjusted depending on the application.
Engine driven pumps are built for site use and mobility.
This makes them well suited to construction environments, agricultural use and any application where equipment needs to be moved regularly.
Engine driven pumps must always be operated outdoors.
Petrol and diesel engines produce exhaust gases, including carbon monoxide, which is dangerous in enclosed or poorly ventilated spaces. These pumps should never be used inside basements, garages or buildings.
For indoor pumping applications, an electric submersible pump should be used instead.
Selecting the right engine driven pump depends on the water type, flow rate, head and site conditions.
If you’re unsure, our team can help you size the correct pump for your application. Call 0115 987 0358 or get in touch via email and we’ll point you in the right direction.
No. Engine driven pumps produce exhaust gases, including carbon monoxide, which is dangerous in enclosed spaces.
They must only be used outdoors in well-ventilated areas.
For indoor use, choose an electric submersible pump
No. Lay flat hose must never be used on the suction side.
It has no internal reinforcement and will collapse under vacuum, preventing water flow and potentially damaging the pump.
Always use reinforced suction hose on the inlet side.
A strainer is essential on the suction hose. It prevents debris entering the pump and damaging internal components.
A foot valve is a one-way valve that keeps the suction hose full of water when the pump is switched off. This helps the pump prime more quickly when restarted.
For dirty water, use a coarse strainer. For cleaner applications, use a finer mesh.
Hose size should match the pump’s inlet and outlet. For example, a 2 inch pump requires 2 inch hose.
Using smaller hose restricts flow and reduces performance. Using larger hose can work but requires additional fittings.
Common sizes include 1 inch (25mm), 1.5 inch (40mm), 2 inch (50mm), 3 inch (75mm) and 4 inch (100mm).
If you’re unsure, check the pump specification or call us on 0115 987 0358.
Engine driven pumps have two sides: the suction side (from the water source to the pump) and the delivery side (from the pump to where the water is discharged). Each requires a different hose type.
On the suction side, always use reinforced suction hose. The pump creates a vacuum to pull water in, and without reinforcement the hose will collapse, stopping flow and potentially damaging the pump.
On the delivery side, lay flat hose is usually the best option. It is lightweight, easy to handle, and ideal for moving water over longer distances under pressure.
You can use rigid hose on the delivery side if needed, but never use lay flat hose on the suction side.
Suction lift is the vertical distance from the water level up to the centre of the pump. Engine driven pumps sit above the water and pull it up through the suction hose, which creates a physical limit.
The theoretical maximum is around 10 metres, but in practice you should allow a maximum of around 6 metres for water. Beyond this, pumps struggle to prime and lose performance. For fuel, the limit is typically 3 metres, and for oil around 2 metres.
If you need to pump from greater depth, consider using a submersible pump instead
Head height is the total vertical distance from the water source to the highest point in the system. It indicates how much pressure the pump can generate.
For engine driven pumps, total head includes suction lift, delivery height, and losses from pipework, fittings and hose runs. Even long horizontal runs reduce performance due to friction.
Always compare your real setup against the pump’s performance data. A pump rated at 30m head will deliver significantly less flow at higher lift levels.
As a rule of thumb, 10 metres of head is roughly equal to 1 bar of pressure (or 14.22 PSI).
So a pump with a maximum head of 30 metres can generate around 3 bar. This is useful when working with irrigation systems or equipment that specifies pressure rather than head.
This is an approximation and assumes clean water with minimal losses, but it is accurate enough for pump selection.
