Reverse Osmosis Membrane Replacement Filters

Reverse Osmosis membranes are semipermeable membranes that provide filtration at the molecular level used in RO filtration systems optimized to enhance performance by removing contaminants, ions and larger particles from water, filtering out almost all remaining contaminants which pass through sediment and carbon pre-filtration stages.
Reverse osmosis membranes will eliminate the risk of contamination for RO water systems to assure clean and quality water ready to drink.
RO membrane cartridges are engineered to restore residential and commercial reverse osmosis water filtration systems. RO membrane replacement cartridges are compatible with a variety of reverse osmosis water filter systems allowing flexibility within the selection to choose from numerous manufacturer for its top performance and fit. BuyDirectWaterFilters.com offers a wide selection of quality residential and commercial RO membranes from some of the leading water quality industry's reputable and trusted brands in reverse osmosis membrane replacement cartridges such as Watts, Pentair, Axeon and more.
Depending on the type of reverse osmosis system and its use, it is recommended to maintain stages of water purification on an ongoing annual basis by replacing the reverse osmosis membrane at least once every 1-4 years while pre & post filters should be replaced about every 6-12 months.







43 items

Membranes Reverse Osmosis TF - Valuetrex

 Introducing Valuetrex's new reverse osmosis membranes. Valuetrex membranes fits most standard co...

 Introducing Valuetrex's new reverse osmosis membranes. Valuetrex membranes fits most standard conventional systems and are at an affordable price. Specifications Length 11.75 inch Width 2 inch Filter Application Reduces chlorine, taste and odor Product ID VX30-1812-50 GPD Available 50, 75, 100 and 150 Filter Life 2 - 5 Years

$ 34.00 $ 51.99

GRO-36EN Encapsulated Membrane - Pentair

GRO-36EN Encapsulated Membrane - PentairThe Pentair GRO-36EN is high-efficiency reverse osmosis (...

GRO-36EN Encapsulated Membrane - PentairThe Pentair GRO-36EN is high-efficiency reverse osmosis (RO) filter that uses a state-of-the-art encapsulated thin layer composite (TLC) membrane. While conventional membranes recover water at a rate of 1 gallon per 3 wasted, this innovative design is up to reduce water wastage to a 1:1 ratio, that’s nearly double the rate of other standard RO systems. This is a function of the membranes unique 2-tier filtration which separates contaminants and matter f...

$ 63.45 $ 64.95

Membrane RO-Pure 50 GPD - Watts Premier 105331

Membrane RO-Pure 50 GPD - Watts Premier 105331Compatible with the Premier RO-PURE Reverse Osmosis...

Membrane RO-Pure 50 GPD - Watts Premier 105331Compatible with the Premier RO-PURE Reverse Osmosis System. The Membrane RO-Pure 50 GPD - Watts Premier 105331 will work only with RO-PURE and RO-PURE PLUS systems. This semi-permeable membrane reduces a wide range of contaminants such as Arsenic, Lead, Nitrates, Percholate, Chromium, Copper, Dissolved Solids as well as Cysts including Giardia and Cryptosporidium.  

$ 119.99

CTA RS9-10 Compatible Membrane - Rainsoft

CTA RS9-10 Compatible Membrane - Rainsoft This CTA RS9-10 Compatible Membrane - Rainsoft is desig...

CTA RS9-10 Compatible Membrane - Rainsoft This CTA RS9-10 Compatible Membrane - Rainsoft is designed to fit a wide range of Rainsoft systems including 9590, 9593, UF-10, 9594, and 21173 reverse osmosis systems. This CTA (Cellulose Triacetate) cartridge offers superior chlorine tolerance in the range of 0.3-0.5 ppm which makes it uniquely suited for use in chlorinated water. The cartridge also provides excellent stabilized salt rejection rates of up to 94%, along with high rejection rates for ...

$ 55.00 $ 44.95

TLC Membrane - Pentair

Pentair GPD TLC (Thin Layer Composite) RO Membrane provides high quality water for a broad range ...

Pentair GPD TLC (Thin Layer Composite) RO Membrane provides high quality water for a broad range of water chemistries. As matter collects on the membrane, water from the feed solution sweeps it away and out its own tube. The cleansed permeate, or purified water, stream continues separately from the drain stream to a storage tank or its point of use.

$ 27.00 $ 44.95

Encapsulated Membrane Elements - Pentair TFM Dry

Encapsulated Membrane Elements -  Pentair TFM DryThis Pentair TFM (thin film membrane) Encapsulat...

Encapsulated Membrane Elements -  Pentair TFM DryThis Pentair TFM (thin film membrane) Encapsulated Membrane is a complete unit that comes with its filter housing and flows control valve, as well as a built-in permeate check valve which is used to identify potential leaks. These features reduce the need for any additional attachments which would otherwise be required to ensure the structural integrity of the TFM element. The encapsulated membrane comes with color-coded ports and Quick Connect...

$ 56.45 $ 71.45

TFM Residential Membranes - CSM

The RE1812-35 RO membrane is for residential use and features dry type elements that are vacuum l...

The RE1812-35 RO membrane is for residential use and features dry type elements that are vacuum leak tested. The polyamide membrane has a 98.0% salt rejection rate with a minimum salt rejection rate of 96.0% and produces up to 35 gallons of filtered water per day.

$ 29.00 $ 39.00

Reverse Osmosis Membrane - Axeon TF Series

The Axeon TF series reverse osmosis membrane - a high-quality water treatment solution that provi...

The Axeon TF series reverse osmosis membrane - a high-quality water treatment solution that provides industry-leading performance for a variety of residential applications.  The made part consists of a polyamide-thin film composite (PA-TFC) membrane that includes a thin polyamide outer layer supported by a porous inner layer. The outer layer delivers a 98% nominal rejection rate for salt, minerals, and other organic compounds while still providing for a high overall filtration rate. Meanwhile...

$ 31.99 $ 43.99

Nanofiltration Membrane - Axeon NF4 GPD

Specifications Length 12 inch Width 1.8 inch Product ID NF4-1812 Media Polyamide Thin-Fi...

Specifications Length 12 inch Width 1.8 inch Product ID NF4-1812 Media Polyamide Thin-Film GPD Available 150, 200, 250 or 686

$ 69.99 $ 179.99

Membrane - AXEON NF3 Residential Nanofiltration

Specifications View Product Specification Sheet Here  Length 12 inch Width 1.8 inch Produc...

Specifications View Product Specification Sheet Here  Length 12 inch Width 1.8 inch Product ID NF3-1812 Media Polyamide Thin-Film GPD Available 150, 200, 350 and 850 Filter Life 6 - 12 Months

$ 65.99 $ 175.99

Quick Change RO Membrane 41407003 50 GPD- Pura

Quick Change RO Membrane 41407003 50 GPD- Pura The Pura 41407003 Quick Change RO Memebrane is the...

Quick Change RO Membrane 41407003 50 GPD- Pura The Pura 41407003 Quick Change RO Memebrane is the replacement membrane for the Pura QCRO 4 Stage Quick Change RO System. This membrane reduces 95 percent of dissolved solids at 50 gallons per day and has 25 percent recovery rate.  This thin film composite Membrane is the heart of the QCRO system and should be replaced every 3 years to ensure continuous high quality water.    Specifications Length 12 in Width 2.5 in Product ID  41...

$ 60.00

RO Membrane 50 GPD 110015 - Watts Flowmatics

  RO Membrane 50 GPD 110015 - Watts Flowmatics The Watts Flowmatic 110015 is a 50 GPD Reverse Osm...

  RO Membrane 50 GPD 110015 - Watts Flowmatics The Watts Flowmatic 110015 is a 50 GPD Reverse Osmosis Membrane featuring Thin Film Composite (TFC) material for durability and longevity. This reverse seal mebrane cartridge is compatible with Watts Premier 4 & 5 Stage RO Systems and Watts manifold style Reverse Osmosis Systems. This semi-permeable membrane effectively reduces Total Dissolved Solids (TDS) and sodium, as well as a number of other contaminants like lead, arsenic, copper, perch...

$ 59.85

Membrane 50 GPD - Watts Premier

Membrane 50 GPD - Watts PremierMembrane 50 GPD - Watts Premier Reverse Osmosis Systems.  This sem...

Membrane 50 GPD - Watts PremierMembrane 50 GPD - Watts Premier Reverse Osmosis Systems.  This semi permeable membrane effectively reduces TDS and sodium as well as a wide range of contaminants such as Arsenic, Lead, Percholate, Chromium, Copper, Radium and Protozoan Cysts including Giardia and Cryptosporidium.  The heart of your Reverse Osmosis system reducing impurities down to 1/10,000 of a micron.

$ 80.45

RO Membrane - AquaFlo 75 GPD Quick Change

The AquaFlo 41407008 is a 75 gallon per day RO membrane designed for the third stage of the AquaF...

The AquaFlo 41407008 is a 75 gallon per day RO membrane designed for the third stage of the AquaFlo QCRO 4 stage RO system. The RO membrane is a Thin Film Composite Membrane featuring a quick connect twist and lock design, making service a snap. To keep your system in top shape, change the AquaFlo 41407009 every 36 months.

$ 85.70

UF3 Membrane Filter 105321- Watts Premier

UF3 Membrane Filter 105321- Watts PremierUF3 Membrane Filter 105321- Watts Premier...

UF3 Membrane Filter 105321- Watts PremierUF3 Membrane Filter 105321- Watts Premier Hollow Fiber Technology uses ultra filtration, a membrane filtration process which uses standard home water pressure to push water through its semi permeable membrane. Suspended particles and materials of high molecular weight are unable to pass through the .2 micron UF membrane, leaving you with only fresh clean water and dissolved minerals to pass through.

$ 44.95

35 GPD Membrane - Watts Premier

35 GPD Membrane - Watts Premier35 GPD Membrane - Watts Premier Reverse Osmosis Membrane is compat...

35 GPD Membrane - Watts Premier35 GPD Membrane - Watts Premier Reverse Osmosis Membrane is compatible with Watts Premier Standard RO Systems. This semi permeable membrane effectively reduces Total Dissolved Solids (TDS) and sodium, as well as a number of other contaminants like lead, arsenic, copper, percholate, radium and cysts. Watts Premier 560016 Reverse Osmosis Membrane is compatible with the following systems:RO-TFM-5SV (500032)RO-TFM-4SV (500025)WP-5 (500023)WP-4V (500109)ZRO-4 (500029...

$ 47.95

24 GPD Reverse Osmosis Membrane - Watts Premier

24 GPD Reverse Osmosis Membrane - Watts Premier 24 GPD Reverse Osmosis Membrane is compatible wit...

24 GPD Reverse Osmosis Membrane - Watts Premier 24 GPD Reverse Osmosis Membrane is compatible with Watts Premier Standard RO Systems. This semi permeable membrane effectively reduces Total Dissolved Solids (TDS) and sodium, as well as a number of other contaminants like lead, arsenic, copper, percholate, radium and cysts. Watts Premier 560016 Reverse Osmosis Membrane is compatible with the following systems:RO-TFM-5SV (500032)RO-TFM-4SV (500025)WP-5 (500023)WP-4V (500109)ZRO-4 (500029)

$ 47.95

66-4506G2 25 GPD RO Membrane - Water Factory

66-4506G2 25 GPD RO Membrane - Water Factory66-4506G2 25 GPD RO Membrane - Water Factory Module i...

66-4506G2 25 GPD RO Membrane - Water Factory66-4506G2 25 GPD RO Membrane - Water Factory Module is a reverse osmosis (RO) membrane water filter. This RO membrane will help provide you with clean, pure, great-tasting drinking water. This replacement membrane has a capacity of 25 gallons per day and should be replaced every 24 months.

$ 185.00 $ 165.00

Tap Water High Production Membrane Elements

The Dow FILMTEC Tap Water High Production Membranes are specifically designed to meet the strict ...

The Dow FILMTEC Tap Water High Production Membranes are specifically designed to meet the strict requirements of medical, hospital, dialysis clinics and other high purity water applications. The 4.6" diameter of these reverse osmosis elements provides increased active area for greater flow rates. SPECIFICATIONS DIMENSIONSLength: 11 inchWidth: 4.6 inchDETAILProduct ID: TW30HP-4611Media: Carbon BlockGPDs Available: 1200 and 3800Materials: Polypropylene, Carbon

$ 983.00 $ 1,359.00

RO Membrane with Flow Control - Omnipure PuROTw...

Omnipure's encapsulated membrane is compatible with both PuROTwist 4000 and PuROTwist 3000 Revers...

Omnipure's encapsulated membrane is compatible with both PuROTwist 4000 and PuROTwist 3000 Reverse Osmosis systems or any system that uses Omnipure Q-Series filters. It comes with a built-in flow restrictor and check valve and is easy to install. GPD Options: 15,18, 36, 50, 5, 100 and 150 

$ 59.99 $ 182.00

Membrane CTA S-1224RS - Microline

The Microline Clack S1224-RS Reverse Osmosis Membrane is chlorine resistant. Use the Microline S-...

The Microline Clack S1224-RS Reverse Osmosis Membrane is chlorine resistant. Use the Microline S-1224RS RO Membrane with the Microline Clack RO System RO-10 and Microline Reverse Osmosis System RO-14. The Microline Clack S1224RS RO Membrane is also known as the CTA-14. It replaces the C112-14 CLK and C112-14-CLK RO Membranes.

$ 80.00 $ 85.00

Membrane 50 GPD TFC S1229RS - Microline

The Microline S1229RS TFC 50 GPD RO Membrane that produces 50 gallons per day. The original membr...

The Microline S1229RS TFC 50 GPD RO Membrane that produces 50 gallons per day. The original membrane produced 35 gallons per day but was replaced by a 50 GPD model with the same part number

$ 80.00 $ 55.00

TFC RO Membrane - Hydrotech TFC

The Hydrotech 41400006 RO membrane is a thin film composite membrane that is compatible with vari...

The Hydrotech 41400006 RO membrane is a thin film composite membrane that is compatible with various Hydrotech systems including the 1240 Series, E, M and Pro Systems, HT101, HT102, HT103 and HT123 Series Systems. It produces up to 35 gallons of filtered water per day and is packaged dry to extend shelf life.

$ 70.00 $ 90.00

RO Membrane- Hydrotech 25 GPD TFC

The Hydrotech 33001068 RO Membrane, is a compatible replacement for many Hydrotech RO systems (12...

The Hydrotech 33001068 RO Membrane, is a compatible replacement for many Hydrotech RO systems (1230, 1240, 1020, and 1030). This filter produces 25 gallons of output per day through a unique filtration process that forces pressurized water through the polyamide thin-film composite membrane to reduce total dissolved solids and non-organic chemical contaminants in the water supply. This process is particularly useful in treating cloudy or lousy tasting/malodorous water. The premium quality filt...

$ 100.00 $ 55.00

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