Tsurumi HS3.75S Submersible Site Drainage Pump | High-Flow 3 Inch, 310 L/min

Tsurumi HS3.75S Submersible Site Drainage Pump | High-Flow 3 Inch

The Tsurumi HS3.75S is the high-flow model in the HS range. It uses the same 750W motor and 18m head as the HS2.75S, but discharges through a larger 3 inch (80mm) outlet, lifting its flow to up to 310 litres per minute. The bigger outlet also means lower friction loss, so it keeps more of that flow over long hose runs, making it the choice for moving large volumes of water across a site fast.

Built to last in demanding environments

The HS3.75S shares the HS range's rugged build: a ductile iron pump casing, cast aluminium motor frame and head cover, a wear-resistant urethane semi-vortex impeller, a 403 stainless steel shaft, a PVC strainer base and a double mechanical seal. A 7mm free passage handles dirty water carrying silt, sand and suspended solids.

Oil lifter for longer seal life

As a 750W model, the HS3.75S features Tsurumi's oil lifter system, which keeps the shaft seal continuously lubricated even at low water level or partial submersion, extending seal and pump life on long-running dewatering jobs.

Manual or automatic

Available as a manual pump or with an automatic pendant float switch in a waterproof, ball-bearing actuated housing. The HS3.75S automatic switches on at approximately 430mm and off at approximately 50mm.

Performance

• Maximum flow: 310 L/min
• Maximum head: 18m
• Outlet: 3 inch (80mm)
• Motor: 750W, 110V or 230V
• Free passage: 7mm
• Dry weight: 16.9kg (manual)

Supplied with a 10m heavy-duty cable and hose tail, and backed by Tsurumi's 3-year warranty.

Which HS pump do you need?

The HS3.75S is the high-flow 3 inch model, best where volume and long hose runs matter most. For the same head and power through a 2 inch outlet, see the Tsurumi HS2.75S. For a lighter, compact pump with a puddle pump adaptor option, see the Tsurumi HS2.4S. Full comparison below.

Tsurumi HS2.4S vs HS2.75S vs HS3.75S

All three share the same rugged HS build, urethane semi-vortex impeller and 7mm free passage. The right one depends on flow, head and outlet size.

• HS2.4S: 2 inch, 205 L/min, 12m head, 400W, 11.3kg. The compact, lightest model, and the only one that takes the puddle pump adaptor.
• HS2.75S: 2 inch, 230 L/min, 18m head, 750W. Same 2 inch outlet, more head for higher or longer pumping.
• HS3.75S: 3 inch, 310 L/min, 18m head, 750W. The 80mm outlet moves the most water with the least friction loss.

What’s in the Box?

• ✅ 1x HS3.75S Pump
• ✅ 1x 10m Heavy-duty rubber power cable
• ✅ 1x Hose tail