Tsurumi LSC 1.4S (Automatic) Puddle Pumps

Tsurumi LSC 1.4S Puddle Pump – Ultra‑Low Level Control

The Tsurumi LSC 1.4S Automatic puddle pump combines ultra‑low level pumping performance with intelligent sensor control. Designed for surface water removal on flat areas, the automatic version can pump down to around 5 mm as standard, or circa 1 mm when used with optional sensor extension probes.

Like all LSC pumps, it is manufactured by Tsurumi Pumps and supplied with a 3‑year product guarantee.

Why choose the Tsurumi LSC 1.4S Automatic pump

The automatic LSC 1.4S is the ideal solution where unattended operation is required. Using probe‑based level detection rather than a traditional float switch, it is particularly well suited to narrow spaces, shallow water levels and fixed installations. The sensor system ensures reliable activation while maintaining extremely low pumping levels.

Common Applications

• Fixed installations
  
• Flood control systems
  
• Construction sites
  
• Lift shafts and service pits
  
• Utilities and infrastructure projects
  
• Narrow sumps and surface water control

Construction and Build Quality

Built for demanding environments, the LSC 1.4S Automatic features a pressed steel outer casing with a cast aluminium pump stand for long‑term durability. The dual‑position discharge outlet allows the hose to be connected vertically or horizontally to suit site constraints.

A built‑in non‑return valve prevents backflow through the discharge hose, while the cleverly designed air and water cooling route enables extended operation at very low water levels (note: the pump should not be run dry for prolonged periods).

Key Features

• Automatic operation using probe‑based level detection
  
• Pumps down to 5 mm as standard, or circa 1 mm with optional sensor extension probes
  
• No traditional float switch, ideal for restricted or narrow spaces
  
• Dual‑position outlet for installation flexibility
  
• Built‑in non‑return valve
  
• Designed for extended low‑level operation
  
• Available in 110V (site use) or 230V (UK domestic plug)
  
• Supplied with a 3‑year Tsurumi guarantee

Power Options

• 110V: Designed for tough site conditions (requires transformer)
• 230V: Plugs into standard UK domestic 3-pin sockets

Automatic Pumping Options

Fixed Installations:

• SwitchH2O & Panel Kit
• Includes 3x 304 stainless steel probes
• Comes with a control panel & 10m of cable
• Enables automatic pumping down to 5mm

Portable Use:

• Sensor Switch
• Compact electronic float switch
• 2x stainless steel probes in moulded impact-resistant rubber
• Suitable for fixed installations, narrow sumps, and mobile use
• Optional 170mm sensor extension probes available, enabling pump-down to circa 1mm
  👉 Watch the Extension Probe Video here
  👉 Buy Sensor Extension Probes here

How it works: When the probes detect water, the pump activates and continues running for one minute after water drops below the probe. If water touches the probe again within that time, it continues running until clear.

NOTE: Probe extensions are only available on the Sensor options.

Pump Outlet Size

We supply 25mm outlets as standard.
If you need a 50mm outlet, please select this option when ordering.

What’s in the Box?

• ✅ 1x LSC1.4S Automatic Water Puddle Pump
• ✅ 1x 10m Heavy-duty rubber power cable
• ✅ 1x Hose tail

Looking for Alternatives?

• 💡 Budget-Friendly: Stream SPK530
• 💪 Higher Power Option: EVAK Residox