Fit your V-3E water filter, step by step
Step-by-step instructions and maintenance tips, with demonstration videos for each connection method. Most customers fit theirs without a plumber.
Tools you'll need
Gather these before you turn anything offTurning off your water supply
Find the stopcock and shut the mains off
What does a stopcock look like?
A stopcock looks like a tap, but without an outlet spout. It will be between two lengths of pipe, acting as a connector. This allows the stopcock to block the flow of water when it's closed off.
Where's my stopcock?
- Under the kitchen sink
- In a utility room
- In the bathroom
- In a cellar
- Cupboard under the stairs
- In a cupboard — common for flats
- By the gas meter
- In communal corridors, alongside stopcocks for other flats
Will I need to turn my stopcock off?
Yes, you will need to turn your stopcock off the first time you install your new filter. However, you will not need to do this again when you change your cartridges, as we supply an isolation valve to be installed alongside your new filter, and this is then used when changing cartridges.
Connecting to your water supply
Three short demonstration videosA 15 mm adaptor is supplied for connecting the unit to your existing tap, and a 15 mm Tee-junction for connecting to a 3-way water tap.
Maintenance
First run, cartridge life and weekly flushing
Running your filters for the first time
After installing the filter, perform a final check to ensure all fittings are connected and tightened correctly. Make sure the new isolation and wastewater valves are in the off position. It's a good idea to have a second person slowly turn on the stopcock while another person checks for leaks. If no leaks are detected, run your kitchen tap with the filter still isolated to clear any air from the main system. Once the air is released from the main system, you may proceed to slowly open the filter isolation valve while continually checking for leaks. If the system is observed to be watertight, you may then turn on your filter tap.
You can adjust the Tee-junction valve to control water flow rates based on your water pressure. If the pressure is too strong, please decrease it. The longer the water travels through the machine, the better the water quality.
Run your filter tap for ten minutes before first use, while continually observing the newly installed pipework for leaks.
How often will I need to replace my cartridges?
The removal rate of limescale will gradually decrease as it is used and may vary depending on the hardness of the water. We will send you a reminder, but in general:
After replacing a cartridge, run the tap for 2–4 minutes to flush filters before use.
Weekly maintenance
It's recommended to flush the filter through the wastewater outlet — located in the parts identification section below — for three minutes once a week. Flushing the system every week keeps the cartridges healthy and lasting longer.
Parts identification
What is in the box, and where each fitting goes
Professional installation available
Have your system fitted by PHD24, our referred installation partner. A qualified engineer connects the unit, fits the tap, pressure-tests the joints and flushes the filters before they leave.
- Sussex
- Kent
- South London
- Hampshire
- Surrey
Need replacement cartridges or a fitting?
Everything for the V-3E ships for free for orders over £20 within the UK, dispatched on a 48-hour tracked service.
