Finest Filters stocks a wide range of Reverse Osmosis Filters (including a collection of 10" RO Filters and 20" RO filters, RO Membranes and Deionisation and DI Resins.) We also offer a variety of Brita Compatible Filters, ¼” push fit fittings as well as Membrane Upgrade Kits and other RO accessories. Enjoy same-day despatch on orders placed before 4pm – with no minimum order quantity. To begin browsing our range of RO filters, please select a category below.
Items 1-10 of 149
200gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit
You are purchasing a Vontron 200gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is ULP2812Learn More£39.99
400gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit
You are purchasing a FCS 400gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is RT3012-400.Learn More£59.99
10" Ceramic Water Filter Cartridge Element Undersink Pure Water
The Finest Filters ceramic water filter cartridges are a 10 inch filter to fit all standard filter housings. The filter catridge measures 10 inches long and 2.5 inches wide.
This ceramic filter will filter down to 0.5 microns and is a very effective filter often used in undersink filter systems.Learn More£12.49
20 Pack of 1/4" Locking Safety Clips / Collets for RO fittings
Pack of 20 x replacement 1/4" locking collet clips. These can be used with all 1/4" RO pipe fittings. Using these locking clips will prevent the pipe from accidentally being removed by mistake during use. A locking collet clip should be used on every fitting. Safety first!Learn More£2.99
E-Chen Self Regulating Reverse Osmosis RO Booster Pump With Transformer
The E-Chen self-regulating booster pumps are a newer model pump which will automatically stabilise the outlet pressure at 70psi when the inlet pressure is between 10-40psi. The consistent output pressure gives the advantage of prolonged RO membrane life.
We have these pumps available in 5 different models – 50gpd, 75gpd, 100gpd, 200gpd and 400gpd. Please select the model required from the drop down menu when ordering.Learn More£59.99
Flow Restrictor For Reverse Osmosis RO Unit 300 / 400 / 550 or 800cc
Our replacement flow restrictors are suitable for use with any reverse osmosis system using ¼” push fit pipe.
The flow restrictor is available as either 300cc, 400cc, 550cc or 800cc. Please see our recommendation for which restrictor to use depending on the size of the membrane in your system.Learn More£3.99
Replacement Flush Valve Flow Restrictor Assembly for Reverse Osmosis RO Unit
This is a complete replacement flush valve flow restrictor assembly for use with any RO unit using standard ¼” pipe. This assembly is installed on the waste water line on the RO unit and allows the membrane to be backflushed to prolong its life.
The flow restrictor is available as either 300cc, 400cc, 550cc or 800cc. Please see our recommendation for which restrictor to use depending on the size of the membrane in your system.Learn More£7.99
300cc Automatic Flush Valve Reverse Osmosis RO Unit Restrictor 24V
The 300cc automatic flush valve is a replacement reverse osmosis spare part. It can be used in your unit to replace a combined manual flush and waste restrictor valve, or a current automatic flush valve.Learn More£12.49
4 Stage Reverse Osmosis Unit with Booster Pump and DI Stage 50-100gpd
The Finest-Filters 4 stage RO unit with booster pump is ideal for ultra pure water production in a range of applications, and especially in situations where the water pressure is too low for effective water production rate from an un-pumped system. This is a very advanced RO unit, with a built in booster pump, automatic membrane back flush, pressure gauge, high pressure and low pressure switch.Learn More£129.99
1/4" Reverse Osmosis RO Tubing - Range of Colours and Sizes
Finest Filters 1/4" Reverse Osmosis tubing is available in a range of 4 colours (White, Black, Blue and Red). Typically using different coloured tubing allows for easy distinguishing of product and waste water lines in a RO unit setup. Please select the colour and length required from the drop down menu when ordering.Learn More£4.39