RO Units

RO Units

Reverse osmosis units, or RO units, are used to produce incredibly clean water that has had nearly all contaminants removed. A reverse osmosis unit works by pushing water through a semipermeable membrane, thereby applying pressure and forcing any pollutants out. Many people use RO units because it can improve the taste and appearance of water, making it much more enjoyable to drink.

Reverse osmosis units come in different sizes according to the number of gallons per day they are able to purify. When choosing an RO unit, you’ll need to determine how many units of water will need to pass through it, on average, each day. At Finest Filters, we stock several RO units with various capacities. Our smallest system is the 50gpd 4 Stage Complete RO Reverse Osmosis Unit, which comes complete with accessories to install it correctly. We also have a compact 75gpd 3 Stage Compact Reverse Osmosis Unit for those whose water consumption is at the lower end of the scale. 

Larger RO units at Finest Filters include the 400gpd Reverse Osmosis Booster Unit with three pre filters also supplied. To really maximise the capability of your reverse osmosis unit, you can add on a membrane upgrade kit. These kits increase the amount of water that can be purified and also help to reduce unnecessary waste water. If you are considering a reverse osmosis unit and are not sure where to start, please contact us for more information and we can talk you through the available models and find which one will work for you.

10 Items

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  1. 4 Stage Reverse Osmosis Unit with Booster Pump and DI Stage 50-100gpd
    4 Stage Reverse Osmosis Unit with Booster Pump and DI Stage 50-100gpd
    Rating:
    97 % of 100
    As low as £139.99

    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.

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  2. under sink tankless reverse osmosis unit 600gpd
    600gpd Tankless Reverse Osmosis RO Unit With Faucet
    Now £269.99 Was £329.99

    Our Tankless 600GPD Compact 5-Stage Filtration Reverse Osmosis Unit is an excellent solution for pure, clean water directly from your kitchen tap. Designed with multi-stage filtration technology and compact convenience in mind, this system brings you unparalleled filtration power without the need for bulky water storage tanks.

    5 Stage Filtration

    High Capacity Flow Rate

    Digital Display Faucet

    Easy Installation

    Eco-Friendly & Economical

    Tankless Compact Design

     

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  3. 4 Stage RO Unit
    50gpd 4 Stage Complete RO Reverse Osmosis Unit
    Rating:
    94 % of 100
    £79.99

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 50gpd (gallon per day) membrane. We also sell units supplied with 75gpd and 100gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  4. 4 Stage RO Unit
    75gpd 4 Stage Complete RO Reverse Osmosis Unit
    £83.99

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 75gpd (gallon per day) membrane. We also sell units supplied with 50gpd and 100gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  5. 4 Stage RO Unit
    100gpd 4 Stage Complete RO Reverse Osmosis Unit
    £89.99

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 100gpd (gallon per day) membrane. We also sell units supplied with 50gpd and 75gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  6. 50gpd 3 Stage Compact Reverse Osmosis RO Unit
    50gpd 3 Stage Compact Reverse Osmosis RO Unit
    £41.99

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 50gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  7. 75gpd 3 Stage Compact Reverse Osmosis RO Unit
    75gpd 3 Stage Compact Reverse Osmosis RO Unit
    £44.99

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 75gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  8. 100gpd 3 Stage Compact Reverse Osmosis RO Unit
    100gpd 3 Stage Compact Reverse Osmosis RO Unit
    £48.99

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 100gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  9. 200gpd 4 Stage Reverse Osmosis RO Unit with Optional DI Chamber
    200gpd 4 Stage Reverse Osmosis RO Unit with Optional DI Chamber
    £159.99

    You are purchasing a high quality Finest Filters 200gpd RO Unit. This unit comes with 3 pre filters (5 Micron Sediment, Carbon Block filter and Granular Carbon GAC filter cartridge). It is also supplied with 2 x 100gpd membranes, making this a 200 gallon per day unit.

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  10. 400gpd_ro_unit_with_large_di_stage
    400gpd 4 or 5 Stage Reverse Osmosis RO Unit with Booster Pump
    As low as £329.99

    Finest Filters 400gpd RO Unit. This unit comes with 3 pre filters (5 Micron Sediment, Carbon Block filter and Granular Carbon GAC filter cartridge) and also a Booster Pump to increase the pressure for optimal performance.

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