Grundfos PM Rainwater Management

The PM Rain automatically starts when a demand is sensed – for example the flushing of a toilet or filling a washing machine - and will switch over to mains water when your tank is empty or in the case of an electrical failure. Grundfos has incorporated a specially designed valve eliminating the need for an in-tank float – drastically decreasing installation time.

The PM Rain saves you more than just water. The ‘floatless’ operating system allows for speedy installation with no holes to drill or cable to conduit. The PM Rain comes complete with all of the features you would expect, such as automatic changeover and water source indication lights.

It also incorporates further protection features such as leakage detection (to prevent rapid cycling). The PM Rain is fully certified to AS4020 - the standard designed to test any product that comes in contact with drinking water. To further reduce the usage of precious mains water the incoming pressure is reduced to 200 kPa.

The easiest, quickest system to install

• Does not require any regular maintenance
• Dual check valve for backflow prevention
• Suitable for above and below ground tanks
• Automatically switches to mains water in the event of a power failure.

Technical Features