RSD-400 Professional Puddle Pump Kit Flat Roof Water Removal Bundle (with Crab Sensor & 20 m Hose)
Stop standing water before it causes damage.
This RSD-400 Professional Puddle Pump Kit is the go-to solution for flat roof water removal, designed to leave surfaces virtually dry perfect for roofers, property maintenance teams, and facilities managers.
Featuring the RSD-400 Automatic Puddle Pump with Crab Sensor, this kit includes a 20 m 1 (25 mm) green MDS discharge hose and 2 stainless hose clips, giving you a complete, ready-to-use setup for fast, automatic surface water removal on flat roofs, car parks, basements, and other hard-standing areas.
Ultra-low suction removes water down to 1 mm
Fully automatic operation via Crab Sensor
Plug-and-play complete kit
Why Choose This Flat Roof Pump Kit?
Designed for professional use, this bundle gives you everything you need to safely and efficiently clear standing water from roofs and hard surfaces without manual supervision.
Automatic RSD-400 puddle pump with Crab Sensor
20 m 1 (25 mm) green MDS discharge hose
2 x stainless hose clips for secure connection
Leaves surfaces almost completely dry
Ready to use out of the box just connect and pump
Protects roof membranes, insulation, and structures from water pooling damage
Built Specifically for Flat Roof Water Removal
Standing water on flat roofs can cause leaks, membrane blistering, and costly structural damage.
This kit is purpose-built for rapid roof dewatering during and after heavy rainfall.
Automatic start/stop control via the Crab Sensor works unattended
Low-level suction removes water down to 1 mm deep
Lightweight & portable ideal for roof access and tight spaces
Thermal overload protection for safety and longevity
Perfect for emergency response and regular maintenance
Use it to keep flat roofs, terraces, podium decks, car parks, basements, lift shafts and concrete slabs free from pooling water.
Ideal For
Domestic & commercial flat roofs
Office blocks, schools & hospitals
Construction sites and new builds
Car parks, driveways & hard-standing areas
Basements, lift pits & voids
Property maintenance & roofing contractors
Whether youre maintaining a flat roof system or dealing with flooding on site, this compact, powerful pump keeps you dry, compliant, and operational.
Why This Kit Beats Buying Separately
| Buying Separately | This Professional Kit |
|---|---|
| Must choose correct hose type | Included & perfectly matched |
| Manual pump control | Automatic Crab Sensor |
| Water left behind on roof | Pumps down to 1 mm |
| Delayed setup | Ready to use instantly |
| No fittings | Hose & clips included |
One purchase one complete flat-roof drainage solution.
Technical Specifications RSD-400 Automatic Puddle Pump
| Specification | Value |
|---|---|
| Model | RSD-400 Automatic (Crab Sensor) |
| Voltage | 230 V Single Phase |
| Power | 400 W |
| Outlet Size | 1 (25 mm) |
| Max Flow Rate | 190 L/min |
| Max Head | 12 m |
| Lowest Suction Level | Down to 1 mm |
| Weight | 14 kg |
| Cable Length | 10 m |
| Operation | Automatic (via Crab Sensor) |
Hose & Fittings Included
| Component | Details |
|---|---|
| Discharge Hose | 20 m x 1 (25 mm) Heavy-Duty Green MDS |
| Hose Clips | 2 × Stainless Steel Clips |
| Connections | Direct hose fit no extra fittings required |
Key Benefits at a Glance
Complete professional flat-roof pump kit
Automatic Crab Sensor for hands-free use
Removes water down to 1 mm
Ideal for roofs, car parks & basements
Lightweight, portable & easy to use
Fast deployment during heavy rainfall
Prevents leaks, ponding & structural damage
Designed for professional maintenance teams
Need technical help or regular maintenance advice?
Our Henry Pumps specialists can help with installation, hose compatibility, or replacement Crab Sensors.
0333 050 3748
sales@henrypumps.co.uk
Customer reviews
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Brand:JS
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Condition:New
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Product Code:RSD400ProKit
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Weight:15kg
Buy with confidence
At Henry Pumps, we support residential, commercial, and industrial customers, from homeowners and landlords to contractors and facilities teams. Based in Derbyshire, we help solve flooding, drainage, and water management challenges across the UK. Every pump we supply is chosen for proven reliability and performance, backed by expert, straightforward advice you can trust. Whether you’re maintaining a property, managing a building, or dealing with an urgent issue, we’ll help you find the right solution.
