Reverse Osmosis Membranes


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Call us at (940) 382-3814

Standard Filmtec TFC Membrane
GE Encapsulated Membrane
GE Encapsulated Membrane

We stock reverse osmosis membranes in the most popular residential sizes, and can get other sizes and styles usually with about a three-day shipping delay. Please call or email if you don't see what you need. “Residential” membranes are standard-sized models that are installed in all standard membrane housings (see the first picture at right). “Encapsulated” membranes are built-in units that come in their own membrane vessel. With encapsulated membranes, both the flow restrictor and the check valve are built in. Check valves to be installed inline before the tank tee can be ordered from our RO Parts Section. With standard RO units you can normally change the production size of your membrane, but you will also need to change the unit's flow restrictor to match the membrane. Again, see our RO Parts Section.

A note about membrane sizes: We do not guarantee that the membrane will produce the amount of water that the manufacturer's rating states. GPD (gallon-per-day) performance can go down or up dramatically according to such factors as Total Dissolved Solids of the water treated, water temperature, water pressure, condition of prefilters, etc. There's a good discussion of RO membrane output variables in our technical section.

All membranes listed below, except the final item, the encapsulated membrane, and membranes for Hydrotech and Microline units are in the format pictured at right and will fit any standard membrane housing.

If you change the size (gallon per day performance rating) of your present membrane significantly, you'll need to match flow restrictor of your unit with your new membrane. (If you change from 16 gpd to 18 gpd, don't worry about it; if you change from 24 gpd to 50 gpd, you should change the flow restrictor. Go here for a full explanation.)

Note: TFM and TFC membranes fit our Black & White series reverse osmosis units, our countertop units, our Gold Series units, Hybrid units, and Economy Units.

Note: All membranes except the encapsulated model will fit in a standard membrane housing. However, if you change from your original size, you'll need to change your flow restrictor as well.

The list below includes standard-sized membranes and one encapsulated membrane. We also stock Hydrotech and Microline membranes. Go here for Hydrotech & Microline membranes.


Reverse Osmosis Membranes

A 16 gallon-per-day CTA (cellulose) membrane. Chlorine tolerant.
$56.00
Part # mm216
Add to Cart
An 18 gallon-per-day thin film composite (TFC) membrane.
$44.00
Part # mm018
Add to Cart
A 24 gallon-per-day Filmtec residential thin film composite (TFC) membrane. This is the standard membrane on our Black & White series units.
$52.00
Part # mm024
Add to Cart
A 36 gallon-per-day residential thin film composite (TFC) membrane.
$54.00
Part # mm036
Add to Cart
A 50 gallon-per-day Filmtec residential thin film composite (TFC) membrane.
$56.00
Part # mm050
Add to Cart
A 75 gallon-per-day Filmtec residential thin film composite (TFC) membrane.
$61.00
Part # mm075
Add to Cart
A 100 gallon-per-day Filmtec residential thin film composite (TFC) membrane.
$81.00
Part # mm100
Add to Cart
GE/Osmonics 36 gallon-per-day encapsulated membrane. This membrane is unique in that it contains both check valve and flow restrictor and connects with Quick Connect fittings.
$68.00
Part # mm600
Add to Cart

Commercial, High Gallon Per Day, R.O. Membranes

The following is a list of available WATTS brand Commercial R.O. Membranes.

Part# Description Price
mm702 WATTS Commercial Membrane 2.5" X 21" 300 GPD $197.00 Add to Cart
mm704 WATTS Commercial Membrane 2.5" X 40" 800 GPD $262.00 Add to Cart
mm703 WATTS Commercial Membrane 4" X 21" 1,050 gpd $332.00 Add to Cart
mm700 WATTS Commercial Membrane 4" X 40" 2,200 gpd $372.00 Add to Cart

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