rainaid
Top Up Devices
In some cases the tank is required to have water maintained at a particular level. Below are some devices to obtain this.
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Mains to Tank Top Up (long thread) by Rain Harvest

  • Watermark Approved (AS1910)
  • Easy and quick to install
  • Flow rate of 2 Litres per minute
  • Built in back flow prevention 'dual check' valve for added safety
  • 100mm air gap
  • Can be installed on angled surfaces
  • Ideal for new or existing rainwater tanks
  • Not affected by variation in mains water pressure
  • Indicator light switches on when in use
  • Adjustable maximum and minimum top-up levels
  • Low maintenance requirement
  • Must be installed by a licensed plumber
  • For more info see the brouchure on the manufactures website
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Pump Buddy Tank Top Up

The PumpBuddy® valve is an inlet control device that allows for variable minimum and maximum water level settings within a water tank.

The PumpBuddy® will be closed when both weights are submerged (maximum water level).
The valve will remain closed until the bottom weight is exposed (minimum water level).
The valve will then open and remain open until the maximum level is reached.

Benefits:
  • A high volume water inlet control device.
  • Variable adjustment between minimum and maximum water levels.
  • Positve On/ Off (no half flow )
  • Reduces pump run time (saves electricity).
  • ncreases pump life.
  • Working Pressure: 55 - 1000kPa (8 - 150 PSI
  • Minimum inlet pressure 55kPa (8 PSI)
  • No power required
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RainAid LTRA20- tank top up valve

The RainAid valve is the ideal way of controlling the backup water source (mains or other) on a rainwater collection tank. It will ensure your rainwater tank never runs completely dry in the event of demand exceeding rainfall (supply).
You can easily set the valve so that it maintains a set (minimum/maximum) level of water in a tank.
That level can be as low or as high in the tank as you need...letting you determine how much storage you want in reserve to catch the next inflow of rain.
  1. 20 mm-3/4  supply line
  2. Simple to install
  3. No power to operate unit
  4. Positve On/ Off (no half flow )

Operating Principle

  • The RainAid valve is a variation on the float valve principle but uses a specially designed "weighted float".
  • A weighted float of neutral bouyancy is suspended on a cord set to the water level you wish to maintain.
  • The weighted float will be submerged during times of good rainfall and the valve will remain closed.
  • When storage levels reach the pre-set minimum the weight will open the valve and allow mains water to enter the tank until the water level has been restored to approx 30mm above the minimum, at which point the valve will close.
  • The area above the pre-set level is free to catch the next rainfall, untill then, the RainAid valve will ensure the water level in the tank does not drop below the level of the weight, ensuring a constant supply and protecting pumps from running dry