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Known for their commitment to quality, John Guest produce some of the world’s best tubes and fittings. Pure Water on Tap stocks a wide range of John Guest fittings, not easily found in most hardware stores. We stock imperial sizes: 1/4”, 5/16”, 3/8” and 1/2” in both fittings and tube. Tube in blue color, sold per metre.

Two-stage filtration process

Stage 1

The first stage filter cartridge in the Twin Under sink System has two important functions:

  1. Mechanically filters out dirt and sediment.
  2. Removing the above contaminants protects the chemical removal cartridge allowing it to function more effectively and last longer.

 Stage 2

The second stage is where the chemical removal filter functions. With this system you have endless filter options from disposable carbon cartridges to re-cleanable ceramic cartridges. In most if not all cases the filter in the second stage removes all chlorine, chemicals, pesticides, unpleasant tastes and odour along with harmful heavy metals. Please contact our sales team to discuss filter options 03 9374 1100.

The Mountain Stream Twin Under sink is self-maintainable. If the flow rate slows, you may need to replace the filter in the first stage to extend the life of the chemical removal filter. Cleaning frequency will vary depending upon water quality and use.


Filter output

Max flow rate

32H x 23W x 13D cm

5,000 litres

3 litres per minute