Superhead First- Flush System

When collecting rainwater it is very important to keep the water clean and safe. Over time leaves, dirt, bird droppings, salt and other pollution builds up on your roof and gutters. Without a first- flush system this will be washed off the roof and directly into your tanks causing the water to become dirty and possibly dangerous.

The Superhead is installed anywhere before the inlet of the water tank and will automatically discard the first water from the roof when it rains. The amount of water you need to flush will depend on a few things like

The size of your roof- The recommended MINIMUM flush is 20L per 100m²

The amount of leaves and pollution on the roof (polluted areas need to be flushed more- approx 80- 100L per 100m of roof)

The intended use of the water (drinking water will need a bigger flush)

You should always check the quality of the water in your tanks before drinking it.

The amount of water flushed is determined by the length of the PVC pipe attached to the Superhead. 90mm PVC stores 6.5 litres/ metre. If you need to flush more water you can install additional Superheads to your downpipes. You can also increase the volume of the flush pipe by increasing the length and/ or diameter of the flush pipe you use.

The Superhead has a rotating outlet so it can be mounted to a wall, or directly the side of some tanks (like the Supertank)

The Superhead also has an adjustable drain on the flush pipe so you can maximise the amount of water you collect. During periods of frequent rain it isn't necessary to flush the full amount every time. The drain of the Superhead can be tightened to reduce the rate it drains and increase the amount of water diverted to the tank.

The Superhead combines 4 products into 1 device to provide maximum effectiveness and value for money. Here are the 4 parts

1. Large Leaf and Debris Screen

The first stage filter is the large leaf screen. Leaves and other debris are prevented from entering the tank by a 10mm screen. Any debris collected simply falls off.

2. Adjustable First Flush System

The first rain is diverted to a standard 90mm downpipe (not included) so that dirt and other pollutants from the roof don't enter the water tank. Once the First Flush System has filled the internal flap will close and divert clean water through the rear outlet and into the tank.

A drain on the bottom of the First Flush System can be adjusted to alter the rate the system drains. During periods of frequent rain it is not necessary to completely flush the whole system each time. By changing the drainage rate you can maximise the amount of water collected.

*The flush volume depends on the length of downpipe used. Storage volume of 90mm pipe is 6.4 Litres per metre

3. Insect Screen

The final filtration is done with 1mm stainless steel mesh that will stop any insects or floating debris that may enter the tank.

4. Rain Head

The Superhead has the configuration of a typical rain head so that it fits with standard plumbing and drainage systems. In many cases you can simply replace your existing rain head with a SUPERHEAD!.

Installation Instructions

Click here to download print friendly instructions.

1. Select a location to install the Superhead somewhere between the downpipe(s) and water tank inlet. It can be mounted to the wall or directly to the side of some tanks. The rear outlet of the Superhead should be above the maximum water level of the water tank and there needs to be clear room under the Superhead for the flush pipe. The unit will also drip for several days after rain so it should be positioned over a drain/ garden or pot plant

2. If required, rotate the side outlet so that the side outlet face the rainwater tank and secure using the small screws provided.

3. Cut a length of 90mm pipe (or larger if required) so that it is around 100mm shorter than the distance between the bottom outlet and the ground. Use pipe cement or silicone to glue the pipe in to the bottom of the Superhead and secure with the small screws provided

4. Insert the ball into the pipe so it can roll freely.

5. Use pipe cement or silicone to glue the base cap on and secure with the small screws provided.

6. If you intend to paint the unit, now is a good time so you can reach all the hard places.

7. Position the unit in the correct position. Mark and drill the 2 holes at the top of the Superhead to secure the unit to the wall or tank. Insert the wall plugs (if required) and fasten the Superhead to the wall with the large screws provided

8. Measure, cut and connect the pipe from the Superhead outlet to the tank inlet. Use the adapter if required.

9. Secure all pipes using pipe brackets.