Submersible Puddle Pump - RSD-400 - Drains Down to 1mm!

RSD-400 Puddle Pump

Drains Down to 1mm!

Ideal for flooded cellars, flat roofs & nuisance standing water

110V or 230V, Manual or Automatic

RSD‑400 Puddle Pump / Puddle Sucker
Drains Down to 1mm! Manual or Automatic


JS Pumps JS RSD-400 Submersible Puddle Pump / Puddle Sucker

Average Rating: 5/5
from 3 reviews
  • Model:
  • RRP £ inc VAT. You get % discount!
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RSD-400 Residue Drainage Pump for Cellars, Basements & Drainage Duties - 110V or 230/240V - Manual or Automatic

"Puddle Sucker / Puddle Pump" - Pumps down to 1mm

JS RSD-400 Submersible Puddle Sucker / Puddle Pump

The RSD-400 Puddle Pump, also known as a "Puddle Sucker" or "Residue Pump", is a low-level drainage pump with the ability to drain down to 1mm.

The RSD-400 Puddle Pump is ideal for drainage duties in flooded cellars, basements and garages or any flat surface such as flat roofs and carparks where residual nuisance water persists.

The RSD-400 features a stainless steel outer case, motor pack and shaft, while the motor lid, pump casing and volute are manufactured from cast iron.

This submersible puddle pump is equipped with a non-return valve on the suction side, which prevents the return of any water. The bottom plate of the RSD-400 is manufactured from cushioned rubber which helps prevent damage to the tank bottom or floor.

Automatic Operation Puddle Pump with WaterGuard System

The RSD-400 is available in both manual and automatic versions. The Automatic option uses the WaterGuard Control Box and WaterVole Sensor to start/stop the pump when water is detected.


  • Maximum Head: 11 m
  • Maximum Flow: 180 litres/min
  • 110V or 230V
  • Centrifugal Impeller
  • Complete with 10 Metres of Power Cable
  • Low-level drainage - pumps down to 1mm
  • 1¼" top outlet with 25mm, 19mm & 15mm step adaptor hosetail

Product Applications


RSD-400 Submersible Puddle Pump

  • Drains down to 1mm
  • Ideal for removing flood water from cellars, basements & garages
  • Pumping out residual water from receiving tanks and pits
  • Drainage of water on construction sites, underpasses and underground pits
  • Removal of residual water in pits and ditches
  • Pumping water out of swimming pools

Example installation

Example installation using a WaterGuard control box and WaterVole sensor to allow for automatic operation.

Example installation using a WaterGuard control box and WaterVole sensor to allow for automatic operation.

Performance Specifications

Model Outlet kW Flow Head
RSD-400 1¼" 400 W 180 l/m 11m

Dimensions & Weight

Model Dimensions HxWxL Weight
RSD-400 370 x 167 x 167 mm 15 kg

RSD-400 Submersible Pump Performance Curve

RSD-400 Submersible Puddle Pump Performance Curve

What does this chart mean? See our blog post How to Understand a Pump Flow Curve.


Download the datasheet for the RSD-400 Puddle Pump

RSD-400 Puddle Pump Datasheet


Customer Reviews


Perfect for the job.

By: Darren Ambrose on

I'm a roofer and this was just the job to use on flat roofs.

Rating: 5/5


Impressive Performance

By: Mrs E. Jones on

We got this puddle pump with the waterguard unit to pump water out of our cellar as always it floods when it rains. The automatic version is great and means we don't have to remember to switch the pump on and off when there's bad weather.

Rating: 5/5


Very speedy service

Rating: 5/5

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