RSD-400 Residue Puddle Pump

RSD-400 Residue Puddle Pump Ultra-Low Level Water Removal, Right Down to 1mm

The RSD-400 is a specialist residue or puddle pump, purpose-built for removing water from flat surfaces down to just 1mm. Ideal for final clean-up jobs, flooded basements, flat roofs, or finished floors, this pump leaves virtually no water behindperfect for when only a completely dry surface will do.

The RSD-400 Puddle Pump manufactured by the experts from JS, also known as a Puddle Sucker is our premium low level drainage pump able to pump water down to as little as 1mm. 

This makes this RSD-400 ideal for applications such as basement or cellar drainage, flat roofs or car parks or for instance where nuisance standing water is present that requires low level drainage.

Engineered for Precision Water Clearance

Unlike standard submersible pumps, the RSD-400 is designed to operate in very shallow water, making it a go-to solution for emergency response, facility maintenance, and site clean-up.

Perfect for:
Domestic flood recovery and cellar clearing
Facilities and property management
Construction site finishing and water spill clean-up
Pool, spa, and hot tub emptying (free from chemicals)
Roof and flat-surface drainage tasks

As standard the RSD-400 pump comes equipped with a non-return valve on the suction side, which prevents the return of any water. The bottom plate is manufactured from cushioned rubber which helps prevent damage to the pump bottom or surface which it is placed.

Key Features & Benefits:

Pumps Down to 1mm Near-total surface water clearance
Low-Level Design Ideal for flat, hard surfaces where traditional pumps can't operate
Compact & Lightweight Easy to handle and transport (only 14kg)
240V Electric Powered Plug-and-play with standard UK mains power and 110v available
Robust Construction Durable casing for site and commercial use
Quick & Easy to Deploy Set it down and let it work

You can be assured of quality - stainless steel outer case, shaft and motor case. Cast iron motor lid, pump casing and volute with double mechanical seals, carbon ceramic and silicon carbide in a lubricated oil chamber.

Precision Where It Counts

With a maximum flow rate of 190 L/min, the RSD-400 quickly clears water even in confined or shallow areas. Its top-discharge design and non-return valve help maintain suction even at very low water levels.

Supplied with 10 metres of power cable.

• RSD400
• Centrifugal Impeller
• Manual - No Float
• 230v 50Hz or 110v 50Hz Available
• 0.4Kw
• 190 Litres Per Minute Maximum
• 11.5 Metres Head Maximum
• 1¼" BSP Female Outlet c/w Step adapter hosetail connection 25mm/19mm/15mm
• H 370mm x W 167mm x L 167mm
• Complete with 10 Metres of Power Cable
• Suitable for clean water only drainage applications where water can be drained down to approximately 1mm.

Can be configured to be used in automatic operation - see our Utility Panel & Puddle Sensor in related items or the option with Crab Sensor.

Why Choose the RSD-400 Puddle Pump?

• Ideal for final clean-up and precision drying

• Trusted by homeowners, contractors, and emergency teams

• Easy to store, quick to deploy

• Perfect for anywhere that needs ultra-low-level pumping

• Supported by Henry Pumps your water pumping specialists

When only near-total water removal will do, trust the RSD-400 to leave your surfaces dry, clean, and clear.

Order now and get the job done down to the last millimetre.

Click here to download full data sheet.

Utility Panel & Puddle Sensor Data Sheet.