Watts Reverse Osmosis Membranes

Watts Reverse Osmosis RO Pure Water Replacement Membranes

Large selection of replacement water filters, low prices and fast shipping since 1999.

  1. Flowmatic Watt - FM110015M 50 GPD Reverse Osmosis Membrane - 1000
    Flowmatic Watts FM110015M 50 GPD Reverse Osmosis Membrane
    Flowmatic Watts FM110015M 50 GPD Reverse Osmosis Membrane for WP-5. Reverse Brine Seal. For Watts and Flowmatic manifold systems. Do not use in the standard Watts or Flowmatic systems as the reverse Bribe Seal will not function correctly. TFC high flow. We recommend replacing the flow restrictor located in the end of the drain line hose where attached to the system. Remove the tube and find the flow restrictor and discard. Install our new inline flow restrictor in the drain line by cutting the line about 12" from the system. Order 2 and save even more! Learn More
    $129.99

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.

* Watts ® is the registered trademark of Watts , the manufacturer of Watts ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Watts .  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Watts ® brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Watts ® equipment.