overflow syphon odour prevention
floating intake vavle
Minimax_Optimax Filter
platin direct schematic layout
Platin Direct Package

Platin Direct Rainwater Harvesting System 1500-7500 Litres

£2,393.65£4,089.79 inc VAT

The Direct-supply system is designed to support WCs, washing machines, irrigation and outside cleaning purposes.


FREE Delivery by Tuesday, 28 May, 2024.


Protecting you


How does the Platin Direct Rainwater Harvesting Package work?

Rainwater is collected from the roof of the property and fed into the underground tank via the downpipes. On entry to the tank, the water passes through a filter to prevent any debris from going into the tank. With this system, there is a mains water top-up unit located within the property. This unit supplies mains water to the underground tank when the rainwater level is low.

The operation of this unit is controlled via a float switch. There is a pressure-sensitive pump located in the underground tank. When a valve or tap is opened, water will be pumped under pressure until the valve is closed, allowing the system to repressurise and turning the power off to the pump.

Why choose a Platin Direct Rainwater Harvesting Package?

  • Cost-Effective Gravel Backfill: Forego the traditional concrete installations. Our gravel backfill approach can save you approximately £60 per cubic metre, reducing installation costs significantly.
  • Flexible Installation with Vehicle Loading Lid: Don’t have enough garden space? No worries. The vehicle loading lid allows for the system to be installed under your driveway, maximising space usage.
  • Eco-Conscious Material: The underground tank is made entirely from 100% recycled plastic, reflecting our commitment to sustainability.
  • European Market Leader Quality: As a top choice in Europe, this system guarantees reliability and effectiveness in rainwater harvesting.
  • Hassle-Free UK Delivery: We offer free delivery across the UK mainland, making your purchase convenient and straightforward.
  • Intelligent Water Management: The system comes equipped with an automatic submersible pump, featuring automatic restart and dry-run protection. This ensures efficient and worry-free operation.
  • Uninterrupted Water Supply: Unique to this system is the integrated mains water back-up. It automatically tops up the underground tank with mains water when needed, ensuring a continuous supply of water.

Images are for illustrative purposes only; there is a possibility that certain products may have been upgraded or replaced with equivalent alternatives.

What’s included

Supplied by Graf

Platin Shallow Dig complete package Direct -supply 1500-7500 Litres, comprising of:

  • PLATIN Shallow Dig tank 1500-7500 litres, with dome & sealing, set DN 100
  • PLATIN telescopic dome shaft Mini green, with PE-lid, for pedestrian loading/or vehicle loading
  • PLATIN Filter package 3 House, Minimax-PRO filter internal/inflow stilling system/overflow siphon/Spannfix – DN 100
  • Pump package Home Direct Platin
  • 25m roll of rainwater harvesting b/g pipe, (25 mm, with fittings)
  • Mains water back up unit
  • Float sensor (connected from mains water back-up unit to the underground tank)

Supplied by others

  • 100mm diameter duct pipe to contain; float sensor cable, power cable for pump, also bringing mains water to underground tank as and when required
  • 100mm diameter drainage pipe connected from downpipes to the inlet at the top of the tank (all downpipes brought into one pipe for connection to the filter)
  • 100mm diameter pipe for overflow from the tank to mains drainage network

System Benefits

• Simple & quick to install.
• Submersible pump supplies harvested rainwater on-demand to WCs, washing machine & external tap.
• Mains-on-Tap unit tops up the water level in the Platin tank when rainwater levels are low to guarantee continued water supply.
• The quiet & conveniently sized mains water back up unit will fit in a kitchen or utility cupboard for very low visual impact.
• Innovative float sensor detection on mains water back up unit ensures that the underground tank is kept supplied with mains water but only the amount necessary.

Product Dimensions, Levels & Weights

Platin Tank Dimensions & Weights (1500L – 7500L)

Rain Water Flat Tank 1500L Platin | Download
Rain Water Flat Tank 3000L Platin | Download
Rain Water Flat Tank 5000L Platin | Download
Rain Water Flat Tank 7500L Platin | Download

Platin Tank Levels & Invert Levels

Platin Tank Levels | Download

Platin RWH Tank Invert Levels | Download

Mini & Maxi Lid Dimensions

PE Mini Lid (Pedestrian Loading 371010) | Download

PE Maxi Lid (Pedestrian Loading 371011) | Download

Vehicle Loading Lid (371052) | Download

Extension piece options

Extension Sleeve (371003) | Download

Extension Sleeve (371015) 1000mm | Download



GRAF Platin RWH Brochure (UK Edition) | Download

Data Sheets

Platin House Direct Package | Download


Platin Direct Schematic Layout | Download

Installation Instructions

Home Direct System Installation Manual | Download

Installation & Commissioning

This informative guide covers the following:

  • Loading information
  • Tank coverage heights
  • Excavation dimensions
  • Technical & general data
  • Installation & Assembly

Read the Guide | Download
Read the Guide (Tank Only) | Download

Service Provider Support

Graf UK has a national service provider network of contractors who can offer various services including the installation of our tank systems.

Coming Soon: New UK map with the service provider/installer contact details.

Delivery Information

Please note the following regarding Graf UK deliveries

We’re still delivering to our customers safely via our own delivery vehicles & drivers in the main, using external hauliers when required.


This gives us much greater control & flexibility over our deliveries.


All orders are typically delivered within 5-7 working days from receipt of order, however during this time due to UK-wide disruption, some deliveries may take a little longer and we would still aim to deliver within 10 days.

• Delivery lead time is 5-7 working days on all orders unless otherwise advised.
• Price includes delivery to mainland UK.
• Please check for deliveries into Cornwall, Mid & Northern Scotland & Isles as additional delivery charges may be applicable.
• We cannot currently provide a tracking number for all orders but can accept customer enquiries by phone.
• Off-loading by the customer unless agreed otherwise.
• Tanks are generally strapped to a pallet for forklift off-load, slings can also be used.
• Please advise if there is restricted access to the site or special delivery instructions.

Additional Items