Learn How To Upgrade The GPD Capacity of Your Reverse Osmosis Membrane

It Is Easy To Upgrade The GPD Capacity of Your Standard Size Reverse Osmosis Membrane. 

If your system uses a standard size membrane then upgrading is really easy.  Simply pick the matching flow restrictor to go with the membrane that you have chosen. By changing the membrane and matching flow restrictor it is simple to increase the GPD (gallons per day) of your reverse osmosis system. Higher production is beneficial for faster recovery times. A high GPD membrane will fill the tank faster after drawing out water.

  1. Flow_Restrictor-1000

    Regular Price: $33.99

    Special Price $19.99

    As low as: $14.99
    150 ml Premium inline reverse osmosis membrane flow restrictor - Our in-line capillary flow restrictors are simple to install. Simply push the 1/4" poly tube firmly into the quick connectors and you are done. Be sure that you order the flow restrictor size to match your reverse osmosis membrane size. Arrow on side points toward the drain. Very simple to install. Learn More
  2. DOW FILMTEC TW30-1812-24 RO #93430 Reverse Osmosis Membrane- 1000

    Regular Price: $89.99

    Special Price $56.99

    As low as: $37.99
    Dow Filmtec ® TFC 24 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" # 93430 Learn More
  3. DOW FILMTEC - TW30-1812-36 #80719 RO Reverse Osmosis Membrane-1000

    Regular Price: $99.99

    Special Price $59.99

    As low as: $39.99
    Dow Filmtec ® TW30-1812-36 TFC 36 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80719 Learn More
  4. DOW FILMTEC -  TW30-1812-50 RO Reverse Osmosis Membrane #80722-1000

    Regular Price: $84.99

    Special Price $69.99

    As low as: $54.99
    Dow Filmtec ® TW30-1812-50 TFC 50 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80722 Learn More
  5. DOW FILMTEC TW30-1812-75 (BW60-1812-75) #114731 RO Reverse Osmosis Membrane- 1000

    Regular Price: $119.99

    Special Price $74.99

    As low as: $49.99
    Dow Filmtec ® TW30-1812-75 (BW60-1812-75) TFC 75 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate. #114731 Learn More
  6. DOW FILMTEC - TW30-1812-100 HR RO Reverse Osmosis Membrane 170102- 1000

    Regular Price: $129.99

    Special Price $84.99

    As low as: $59.99
    Dow Filmtec ® TFC 100 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate. Learn More
  7. Flow_Restrictor-1000

    Regular Price: $33.99

    Special Price $19.99

    As low as: $14.99
    Premium inline reverse osmosis membrane flow restrictor - Our in-line capillary flow restrictors are simple to install. Simply push the 1/4" poly tube firmly into the quick connectors and you are done. Be sure that you order the flow restrictor size to match your reverse osmosis membrane size. Arrow on side points toward the drain. Very simple to install. Learn More
  8. Standard Size RO Reverse Osmosis Membrane Housing

    Regular Price: $34.99

    Special Price $19.99

    As low as: $16.99
    Standard size RO reverse osmosis membrane housing - 90° Ports with 1/8" FNPT Threads - Includes New O-rings and 3 90° 1/4" Jaco Fittings For 1/4" Tube, or upgrade to the John Guest Quick Connectors. The end with a single port is the inlet feed water. On the end with two ports the center port is the permeate (product) water. The offset port is the brine (waste). Learn More
  9. Spanner Wrench To Fit Standard Size Membrane Housings

    Regular Price: $17.99

    Special Price $9.99

    As low as: $6.99
    Wrench To Fit Standard Size Membrane Housings. Easily open those stubborn reverse osmosis membrane housings. Learn More
  10. TW30-1812 RO Membrane Housing- 304 Stainless Steel- SS-1812- 1000

    Regular Price: $129.99

    Special Price $89.99

    TW30-1812 Stainless Steel RO Membrane Housing - High detail and quality. This high end Stainless Steel RO Membrane Housing fits standard residential TW30-1812 RO membranes, which is the most common size of reverse osmosis membrane for home RO systems. This SS Membrane Housing is the finest quality housing we have ever seen for residential RO systems. It is the last membrane housing you will ever need to buy. In stock for same day shipping. Learn More

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 (total disolved solids) 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.   Let the tap water and reverse osmosis water run for a few seconds before drawing your sample.

See our selection of TDS meters under Water Tests.  Knowing the rejection rate is the only wat to know if it is time to replace your reverse osmosis membrane.