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Tsurumi LB800 Contractor Pump – Manual & Automatic

Name: Tsurumi LB800 Contractor Pump – Manual & Automatic
Brand: Tsurumi
SKU: 10-10-1129
Price: 548.40 GBP
Availability: InStock

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£548.40 £457.00 (Exc VAT)

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Choose Model: LB 800 Manual 110v (Industrial)

Part number (MPN): LB-800

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WHY IT WORKS

Built for the job

Tsurumi LB-800 Submersible Contractor Pump

The all-rounder 0.75kW pump for everyday site drainage.

The Tsurumi LB800 is the mid-range workhorse of the LB Series, offering a useful step up in flow and head over the LB480 while remaining easy to handle at 13kg. It's a popular hire-fleet and construction choice for general-purpose dewatering across construction, utilities and flood-defence work.

Performance you can rely on

Power: 0.75kW (110V or 230V single-phase)
Max flow: 310 L/min
Max head: 15m
Discharge outlet: 50mm (set horizontally or vertically to direct water and avoid hose kinks)
Free passage: 6mm solids

Built to last in dirty water

The LB800 features Tsurumi's semi-vortex urethane impeller, double silicon-carbide mechanical seal and oil-lifter lubrication system for dependable operation in any position. Abrasion-resistant rubber and urethane components handle sand, silt and dirty water, and the top-discharge outlet aids motor cooling for prolonged use in low-water and seepage conditions.

Manual or Automatic

Available as a manual pump, or automatic with your choice of switch:

Pendant Float Switch – approx. on level 300mm / off level 60mm. Reliable for larger sumps and general drainage, portable or fixed.
Sensor Switch – stainless-steel probe system; on level 170mm, off level adjustable between 169mm and 20mm with optional extension probes. Maintains the water level below the probes on demand.

Dimensions & weight

Dimensions (manual version): ø187 x 408mm | Weight: 13.0kg

Note: automatic float-switch models are larger as the float is not included in these dimensions.

What's in the box

1x LB800 Pump
1x 10m heavy-duty rubber power cable
1x Hose tail

Backed by a 3-year Tsurumi manufacturer's warranty.

Tsurumi LB Range – Compare Models

Specification	LB480	LB800	LB1500
Power	0.48 kW	0.75 kW	1.5 kW
Voltage	110V / 230V	110V / 230V	230V
Max flow	225 L/min	310 L/min	420 L/min
Max head	11 m	15 m	17.5 m
Outlet	50 mm	50 mm	50 mm
Free passage	6 mm	6 mm	6 mm
Discharge	Horizontal / vertical	Horizontal / vertical	Fixed vertical
Manual / Auto	Manual & Automatic	Manual & Automatic	Manual only
Dimensions (manual)	ø187 x 285 mm	ø187 x 408 mm	ø187 x 600 mm
Weight	10.4 kg	13.0 kg	32.5 kg

Dimensions shown are for the manual version. Automatic float-switch models are larger, as the float is not included in these measurements.

SPECIFICATIONS

Full spec sheet

LB specifications
Model	LB-480	LB-480	LB-800	LB-800	LB-1500
Manual/ Auto	M/A	M/A	M/A	M/A	Manual Only
Outlet/ mm	50	50	50	50	50
Kw	0.48	0.48	0.75	0.75	1.5
Volt	110	230	110	230	230
Flow ltr/min	225	225	310	310	420
Head /m	11	11	15	15	17.5
Free Passage/mm	6	6	6	6	6
W x L x H /mm	ø187 x 285	ø187 x 353	ø187 x 408	ø187 x 408	ø187 x 600
Weight /Kg	10.4	10.4	13.0	13.0	32.5

Flow through hose

Litres per minute with a 2 m lift, through layflat hose. A guide for comparison.

Tsurumi LB-800

1 m: 310 litres per minute
25 m: 300 litres per minute
50 m: 265 litres per minute
100 m: 230 litres per minute
150 m: 205 litres per minute
200 m: 180 litres per minute

Generator: 4 kVA · 110v transformer: 4 kVA

See flow rate examples

Downloads

User Guide PDF · Installation & use

HOW-TO

How-to videos

What is the Difference between a Manual & Automatic Water Pump?

Manual Pump - A pump that does not have a float control or pressure switch to start and stop. It will require an operator to control it.

Automatic Pump - A pump that has a float control or pressure switch to start and stop without an operator.

A float switch is a level controller that has a buoyant, water-tight device that lies
on a liquid, actuating a micro-switch when the level rises or falls, turning a pump on or off.

Which Hose Should I use with my Water Pump?

Layflat hose is very affordable but can kink. Depending on your use, you may be better using a reinforced suction delivery hose for your needs.

Suction delivery hose is ideal for pumping up stairs or over obstacles.

Jonathan Martin explains the differences to help you choose which hose is best for your scenario.

Common questions

Can the Tsurumi LB800 pump dirty water or sewage?

It pumps dirty site water and floodwater, not sewage. The LB800 is built for rainwater, groundwater, standing water and dirty water carrying sand and silt, with solids up to 6mm and water temperatures of 0 to 35°C. It is not designed for sewage, toilet waste, water with stringy or fibrous solids, or flammable liquids, and it should not be left to bury itself in sand.

How low does the LB800 pump, and when does the automatic version switch on and off?

The manual LB800 runs until you switch it off. The Pendant float version switches on at about 300mm and off at about 60mm. The Sensor version switches on at 170mm, and its off level can be as low as about 20mm, depending on the sump. It keeps running for one minute after water drops below the probes, and optional extension probes lower the on and off levels.

Should I choose the Pendant float or Sensor version of the LB800?

Choose the Pendant float for larger sumps and general drainage, portable or fixed, and the Sensor for narrow or shallow sumps where a float has no room to swing. The Pendant uses a ball-bearing switch in a waterproof case, switching on at about 300mm. The Sensor uses two stainless steel probes, switching on at 170mm, and keeps the water level below the probes on demand.

How much water will the LB800 pump through 100 metres of hose?

About 230 litres per minute through 100m of layflat hose at a 2m lift, as a guide. The same guide gives about 300 litres per minute through 25m, 265 through 50m and 180 through 200m, against a maximum of 310 litres per minute. Maximum head is 15 metres, so flow falls further as the lift increases and as bends and fittings add resistance.

What size generator or transformer do I need for the LB800?

Allow at least a 4 kVA generator, or a 4 kVA transformer for the 110V version. Choose 110V for construction sites on transformer power; it has an industrial plug. Choose 230V for a standard UK supply; it has a 3-pin domestic plug. Check the generator's voltage and frequency match the pump, as generators can be inaccurate and low voltage can trip the motor's thermal protection.

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