110V submersible water pump delivering the highest head height and largest outlet in the MAX site pump range, built for large excavations, deeper sumps, and discharge routes requiring greater vertical lift on UK construction and industrial sites.
110V submersible water pump delivering the highest head height and largest outlet in the MAX site pump range, built for large excavations, deeper sumps, and discharge routes requiring greater vertical lift on UK construction and industrial sites.
| BULK DISCOUNT | 3 | 6 |
|---|---|---|
| Price | £363.35 £436.02 | £329.81 £395.77 |
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Log in to access trade discounts110V submersible water pump delivering 250 litres per minute at up to 18 metres of head height, for large-scale dewatering of excavations, foundations, and sumps on UK construction and industrial sites where a lower-powered pump would struggle with volume, discharge distance, or vertical lift. The 80mm (3") outlet moves significantly more water per minute than a 2" outlet at equivalent head heights, and the 18m maximum head gives far greater flexibility in routing the discharge to a safe point away from the work area.
A 500W pump with a 2" outlet and 12m head height is the right specification for most standard site dewatering tasks. When the excavation is larger, the groundwater inflow is faster, or the nearest compliant discharge point is above 12 metres vertical from the pump position, that specification runs out of capacity. The 750W motor driving an 80mm impeller moves 250 litres per minute and maintains meaningful flow rates at head heights up to 18 metres, covering the situations where the lower-powered models reach their limits.
750W rated input: The highest power output in the MAX 110V submersible range. Provides greater pumping capacity for high-volume sites and faster water removal during storm events or heavy groundwater inflow.
250 L/min max flow rate: Moves 250 litres every minute at low head heights, enabling faster clearance of large water volumes from substantial excavations and flooded structures.
18m max head height: The greatest vertical discharge capability in the MAX 110V range. Accommodates discharge routes to significantly higher points, including above-ground drainage systems and elevated skip positions at distance from the pump.
80mm (3") outlet: The largest outlet in the MAX range. Accepts 3" discharge hose for unrestricted flow at high output. Higher throughput with less friction loss than a 2" outlet at equivalent flow rates.
Integrated automatic float switch: Activates the pump when water rises to the trigger point and cuts it when the level drops, maintaining automatic unattended water management without manual intervention.
IP68 rating: Fully sealed for continuous submersion at depths up to 5m under normal operating conditions.
7mm particle handling: Passes particles up to 7mm without impeller blockage. Suitable for water containing grit, aggregate fines, and light site debris. Not suitable for slurry or sewage.
Thermal overload protection: Cuts the motor if the pump overheats due to dry running, blockage, or restricted flow. Resets after cooling.
10m power cable: Standard site reach from a 110V transformer.
Aluminium alloy die-cast motor housing: Robust construction for site conditions with carry handle for single-operative deployment.
Trades and roles:
Site managers and groundworkers on large-scale construction projects
Civil engineers managing high-volume groundwater inflow
Plant hire operators specifying heavy-duty dewatering equipment
Utilities operatives managing large-bore excavation dewatering
Drainage contractors and flood response teams
Industries:
Construction and civil engineering
Utilities and infrastructure
Highways and transport
Industrial maintenance
Emergency flood response
| Specification | Detail |
| Product Name | MAX 110V 750W Submersible Water Pump - 3" Outlet Float Switch |
| SKU | PL080002 |
| Brand | MAX |
| Voltage | 110V AC 50Hz |
| Rated Input Power | 750W (0.75kW) |
| Max Flow Rate | 250 L/min |
| Max Head Height | 18m |
| Outlet Size | 80mm (3") |
| Float Switch | Integrated automatic float switch |
| Suction Type | Submersible |
| Max Operating Depth | 5m |
| Max Water Temperature | 0 to 40°C |
| Max Particle Size | 7mm |
| Power Cable Length | 10m |
| IP Rating | IP68 |
| Motor Housing | Aluminium alloy die casting |
| Thermal Overload Protection | Yes |
| Compliance | CE marked |
| Pump Body Width (B) | 312mm |
| Pump Body Height (H) | 389mm |
| Package Size (W x D x H) | 32 x 22.5 x 44 cm |
| Weight | 19kg |
| Specification | PL080001 | PL080002 | PL080003 | PL080004 |
|---|---|---|---|---|
| Power and Electrical | ||||
| Voltage | 110V AC | 110V AC | 110V AC | 230V AC |
| Rated Input Power | 500W (0.5kW) | 750W (0.75kW) | 530W (0.53kW) | 530W (0.53kW) |
| Motor Housing | Aluminium alloy die cast | Aluminium alloy die cast | Steel plate stretch | Steel plate stretch |
| Performance | ||||
| Max Flow Rate | 210 L/min | 250 L/min | 250 L/min | 170 L/min |
| Max Head Height | 12m | 18m | 11m | 11m |
| Max Particle Size | 7mm | 7mm | 6mm | 6mm |
| Connections | ||||
| Outlet Size | 50mm (2") | 80mm (3") | 50mm (2") | 25mm (1") |
| Max Operating Depth | 5m | 5m | 5m | 5m |
| Min Water Level | Not specified | Not specified | Not specified | 1mmFlat base drains to 1mm |
| Power Cable Length | 10m | 10m | 10m | 10m |
| Features and Safety | ||||
| Float Switch | Yes — integrated | Yes — integrated | Yes — integrated | No float switch |
| IP Rating | IP68 | IP68 | IP68 | IP68 |
| Thermal Overload Protection | Yes | Yes | Yes | Yes |
| Swing Check Valve | No | No | No | YesPrevents backflow on shutdown |
| Priming Required | No | No | No | Yes — before first start |
| Max Water Temperature | 0 to 40°C | 0 to 40°C | 0 to 40°C | 0 to 40°C |
| Compliance | CE marked | CE marked | CE marked | CE marked |
| Physical | ||||
| Dimensions (B x H) | 239 x 356mm | 312 x 389mm | 185 x 305mm | 195 x 335mm |
| Pump Body Width (B) | 239mm | 312mm | 185mm | 195mm |
| Pump Body Height (H) | 356mm | 389mm | 305mm | 335mm |
| Package Size (W x D x H) | 24.5 x 22 x 40.5 cm | 32 x 22.5 x 44 cm | 28.5 x 27.3 x 36.5 cm | 28.5 x 27.5 x 39.5 cm |
| Weight | 12.6kg | 19.0kg | 13.0kg | 13.8kg |
| Best Suited To | ||||
| Primary Application | General site dewatering, 110V supply, moderate volumes | High-volume dewatering, long discharge runs, large excavations | Compact site dewatering, high flow at lower head, 110V supply | Final-stage residual puddle clearing to 1mm, 230V mains supply |
| Application or condition | Status |
| Large excavation and foundation dewatering | ✓ Compatible |
| High-volume pumping from tanks, pits, and sumps | ✓ Compatible |
| Emergency floodwater removal, large-scale | ✓ Compatible |
| Discharge routes up to 18m vertical height | ✓ Compatible |
| Unattended automatic operation via float switch | ✓ Compatible |
| Full submersion to 5m depth | ✓ Compatible |
| Water containing particles up to 7mm | ✓ Compatible |
| 110V site supply via transformer | ✓ Required |
| Slurry or silt-laden water | ✗ Not suitable |
| Sewage or foul water | ✗ Not suitable |
| Flammable or corrosive liquids | ✗ Not suitable |
| Water above 40°C | ✗ Not suitable |
| Particles larger than 7mm | ✗ Not suitable, risk of impeller damage |
Site managers, civil engineers, and plant hire operators on large-scale UK construction and infrastructure projects where standard 500W site pumps cannot clear water fast enough or discharge it high enough. Suited to principal contractors managing high groundwater inflow in deep excavations, utilities operatives dewatering large-bore cable and pipe trenches, and flood response teams requiring rapid high-volume water removal. The 18m head height and 80mm outlet make this the correct specification when discharge routing is constrained by the site layout and the water volume exceeds what a 2" pump can handle within the required timeframe.
Dewatering large foundation excavations and basement structures where groundwater inflow exceeds the capacity of a 500W pump during extended working periods.
Pumping accumulated water from large sumps, underground chambers, and lift shafts on multi-storey construction projects.
Emergency high-volume floodwater removal from commercial buildings, underground car parks, and industrial premises following extreme rainfall events.
Utilities excavation dewatering for large-diameter cable and pipe installations in areas with high groundwater tables.
Temporary site drainage during prolonged rain events on large civils and infrastructure projects where surface water accumulates faster than smaller pumps can clear it.
Discharge routing to elevated points such as above-ground drainage connections or over site hoardings where head height exceeds 12m.
Step 1: Ensure the pump is prepared and positioned correctly before connecting to the mains supply. Never allow the pump to operate if the water level has dropped below the minimum level required, as this may cause damage.
Step 2: Connect a 80mm (3") discharge hose to the outlet. Secure with a hose clip. Confirm the total vertical rise of the discharge route does not exceed 18m. Route the hose to the discharge point.
Step 3: Connect to a mains supply via an RCD and switch on. Confirm a 110V AC supply is available from a site transformer before connecting. This pump is not compatible with a standard 230V mains outlet.
Step 4: The integral float switch will turn the pump off automatically when the water drops below a certain level. At this point, disconnect from mains power. Note: some models may run continuously once powered on, ignoring the float switch. Switch off manually when needed.
Step 5: If the pump stops due to overheating, the thermal overload protection has activated. Disconnect from power, allow the pump to cool for approximately 20 minutes, and investigate the cause before reconnecting. If the pump does not restart automatically, disconnect and troubleshoot before attempting to run again.
Step 6: Note that maximum horizontal distance and flow rate are affected by head height. Head height is the vertical distance between the water surface and the highest point the water is pumped to, regardless of hose length. As head height increases, both flow rate and pumping distance decrease.
Connecting to 230V supply: this pump requires 110V AC from a site transformer. Connecting to 230V mains will cause immediate and permanent motor damage.
Using the wrong hose diameter: the 80mm (3") outlet requires a 3" discharge hose. Reducing to a 2" hose with an adapter increases friction loss and reduces effective flow rate significantly.
Exceeding the 7mm particle size limit: remove large stones, concrete fragments, and debris from the water before starting. Material above 7mm will damage the impeller and may require professional service.
Running the pump dry: operating without water submerging the pump causes rapid overheating. The thermal overload will activate but repeated dry running shortens motor life. Keep the pump submerged during operation.
Misjudging head height: head height is vertical lift only, not hose length. Plan your discharge route carefully before connecting. At 18m vertical head, flow rate approaches zero.
Always ensure the pump has completely stopped and is disconnected from mains power before attempting any cleaning, inspection, or product care. Technical maintenance and servicing may only be performed by qualified personnel. Connect only via an RCD-protected 110V transformer. Do not handle the pump or make connections while standing in water. Do not use for flammable liquids, corrosive fluids, or sewage.
Periodically flush the pump with clean water, particularly after long periods of inactivity or extended use. If used in debris-heavy water, rinse thoroughly after each use. Check and clean the impeller housing regularly to remove any debris build-up. Wipe the exterior with a dry or damp cloth only. Do not use solvents or harsh chemicals. Ensure the pump is completely dry before storing. Store away from direct sunlight and frost. For permanent installations, run the pump weekly to prevent motor issues from developing. Never allow water inside the pump to freeze, as this can cause permanent damage.
Q: When should I choose the 750W model over the 500W or 530W?
A: The 750W model is the right choice when any of three conditions apply: the volume of water entering the excavation exceeds what a 210 L/min pump can clear in the available time; the discharge route rises more than 12m vertically from the pump position; or the site requires a 3" outlet connection to match existing hose runs or flow system components. For standard site dewatering tasks where none of these conditions apply, the 500W or 530W models offer adequate performance at lower weight.
Q: What does an 18m head height mean in practical terms for my site?
A: Head height is the vertical distance between the water surface and the highest point the discharge reaches, regardless of hose length. An 18m maximum head height means this pump can push water vertically up to 18 metres, such as pumping from a deep basement to a surface drain, over a site hoarding to a highway gully, or up to an elevated skip position. At 18m head height, flow rate will be minimal. For best performance, keep the actual head height as low as practically possible.
Q: Why does the 750W model have an 80mm outlet rather than 50mm?
A: The 750W motor generates significantly more flow than a 500W motor can pass through a 50mm outlet without friction losses limiting performance. The 80mm outlet reduces flow resistance, allowing the full 250 L/min output to be achieved at low head heights. Using the 80mm outlet also reduces the velocity of water through the hose, lowering wear on the hose connections and reducing the noise of discharge.
Q: What type of water can this pump handle?
A: This pump is rated for clean water and water containing particles up to 7mm. It is not suitable for slurry, silt-laden water, sewage, foul water, or chemically contaminated water. Remove particles larger than 7mm from the water before starting. For water containing sediment or potential hydrocarbon contamination, consider dewatering filters in line with the discharge.
Q: What does IP68 mean for a pump used in a flooded excavation?
A: IP68 means the pump is fully sealed against dust and rated for continuous submersion in water beyond one metre depth. For a pump operating fully submerged in a flooded excavation, IP68 confirms the motor and electrical components are adequately protected against water ingress at depths up to the stated 5m maximum under normal operating conditions.
Q: What triggers thermal overload protection and what should I do?
A: Thermal overload cuts the motor if internal temperature exceeds a safe threshold. Common causes include running dry without water cooling the motor, a blocked impeller, or extended continuous operation in high ambient temperatures. When it activates, disconnect from power, allow the pump to cool for approximately 20 minutes, identify and resolve the cause, then reconnect. Repeated activation indicates a persistent problem requiring investigation.
Q: Can this pump run unattended overnight?
A: Yes, the integrated float switch is designed for unattended automatic operation. It starts the pump when water rises to the trigger point and stops it when the level drops. For overnight unattended use, confirm the discharge route is clear and free-draining, ensure the 110V supply is stable and RCD-protected, and check that the cable and connections are undamaged before leaving. Note that some units may run continuously rather than cycling with the float switch; confirm behaviour during an attended test run before leaving unattended overnight.
