Filtration and softening
Purest Flow X4.
Two jobs, one tank.
Purest Flow X4 joins ion-exchange softening to KDF55 and catalytic carbon filtration inside one tank, and beside it waits a brine tank. It asks for salt, power and a drain.

- Type
- Filtering and softening in one tank
- Where it goes
- Main water line
- Handles
- Hardness, chlorine, chloramines, tastes and odors
- Begins with
- A free water test


What it does
Two jobs, shared by one tank
- I
Filtration, with softening
Separate layers of softening resin, catalytic carbon and KDF55 lie within the one tank, each free to attend to a goal of its own.
- II
Designed to reduce a good deal
It is designed to ease hardness, and to reduce chlorine, chloramines, tastes and odors, along with volatile organic compounds, trihalomethanes and selected dissolved metals.
- III
Metered renewal
The metered control renews the resin according to the water you use, with brine from the brine tank.
- IV
Power and a drain
Along with salt, it needs electric power and a drain, so the place it goes must offer both.
The parts
Four parts to see, and three layers inside
Tap a numbered marker, or choose from the parts listed. Markers appear only on parts that the image really shows.

How it goes
How Purest Flow X4 finds its way to your home

- I
A free water test
It begins with a quiet look at your water: chlorine, hardness, pH, TDS, iron and manganese. The test costs nothing and asks nothing of you.
- II
A considered recommendation
Your results choose the system, never the other way round. You see one fixed price once the test is done.
- III
Careful installation
Purest Flow X4 joins the supply line, with its brine tank alongside and a drain close at hand.
- IV
Water you enjoy
Water that has been both filtered and softened reaches every tap and appliance.
Where it belongs
Matched to your water, not picked from a catalogue
X4 serves the whole home. It is fitted where your water supply enters, with its brine tank alongside, and it needs a spot with both power and a drain. The settings are chosen to follow your water and your household.
Each recommendation starts with the free test, and a price is named only once your readings are in.
Gallery
Purest Flow X4 at home: the moments it serves
Purest Flow X4
Questions about this system
IWhat is meant by 2-in-1?
Filtering and softening share one tank, with separate layers of softening resin, catalytic carbon and KDF55, each free to attend to a different concern.
IIWhat must be in place for X4 to run?
Three things: salt, electricity and a drain.
IIIWhen does it renew itself?
Its control is metered, so renewal follows your water use and not the calendar.
IVWhich should I choose, Purest Flow X4 or Purest Hyper Flow?
They look alike: each a 2-in-1, with a single tank and a brine tank at its side. Your own water makes the choice, and your free test is where it gets read.
Next step
Ready to meet Purest Flow X4?
A free water test comes first. Then we suggest whatever your readings call for, with a single fixed price once the test is done.




