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Reverse Osmosis RO Membrane Sizing Dimensions

Reverse Osmosis RO Membrane Sizing Dimensions

Reverse Osmosis Membrane Dimensions

 

Reverse Osmosis Membrane nomenclature

  1. Standard Size RO Reverse Osmosis Membrane Housing
    Standard size RO reverse osmosis membrane housing
    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" O.D. Tube. Upgrade to the optional 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).
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    $34.99 Special Price $19.99 As low as $16.99
  2. TW30-1812 RO Membrane Housing- 304 Stainless Steel- SS-1812- 1000
    TW30-1812 Membrane housing - 304 Stainless Steel - SS-1812
    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. Food Grade 304 Stainless Steel.
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    $129.99 Special Price $89.99
  3. Flow_Restrictor-1000
    FLOW RESTRICTOR - INLINE - 150 ML 1/4' QUICK CONNECT FITTINGS
    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.
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    $33.99 Special Price $19.99 As low as $14.99
  4. Flow_Restrictor-250-1000
    Flow Restrictor - Inline - 250 ml 1/4' quick connect fittings

    Flow Restrictor - capillary - 250 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  5. Flow_Restrictor-350 (Flow Restrictor - capillary - 350 ml  1/4' quick connect fit-1000
    Flow Restrictor - Inline - 350 ml 1/4' quick connect fittings

    Flow Restrictor - capillary - 350 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  6. Flow_Restrictor-500  Flow Restrictor - capillary - 500 ml  1/4' quick connect fit-1000
    Flow Restrictor - Inline - 500 ml 1/4' quick connect fit...

    Flow Restrictor - capillary - 500 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  7. Flow_Restrictor-1000 (Flow Restrictor - capillary - 1000 ml  1/4' quick connect -1000
    Flow Restrictor - Inline - 1000 ml 1/4' quick connectors

    Flow Restrictor - capillary - 1000 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  8. Flow_Restrictor-750 (Flow Restrictor - capillary - 750 ml  1/4' quick connect fit-1000
    Flow Restrictor - Inline - 750 ml 1/4' quick connect fittings

    Flow Restrictor - capillary - 750 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  9. Flow_Restrictor-1000
    Flow Restrictor - Inline - 1200 ml 1/4' quick connector

    Flow Restrictor - capillary - 1200 ml 1/4" quick connect fittings. 

    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.

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    $19.99
  10. Stainless Steel Insert Flow Restrictor with Stainless Steel Sediment Screen- 350 ml or 500 ml
    Stainless Steel Insert Flow Restrictor with Stainless Steel Sediment Screen- 350 ml or 500 ml

    Stainless Steel Insert Flow Restrictor with Stainless Steel Sediment Screen- 350 ml or 500 ml

    Stainless Steel Insert Flow Restrictor with SS Sediment Screen

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    $36.99 Special Price $19.99 As low as $12.63
  11. Inline Check Valve - Back Flow Prevention - John Guest Speedfit Quick Connection 1/4SCV and 3/8SCV
    Inline Check Valve - Back Flow Prevention
    Inline Check Valve - Back Flow Prevention - Check Valve- 1/4" quick connect - one way flow, Easy to install. 1/4SCV and 3/8SCV or John Guest Elbow Fitting for Membrane Housing.
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    $27.99 Special Price $19.99 As low as $17.99
  12. Double Style Clip For Inline Post Filters, UV Lamps and Membrane Housings
    Double Style Clip For Inline Post Filters, UV Lamps and Membrane Housings
    Double Style Mounting Clip For Inline Post Filters, UV Lamps and Membrane Housings. Use the 2 1/2" clip for reverse osmosis membrane housings. Use the 2" clip for inline post water filters and small UV Lamps. Sold individualy, so order in even numbers.
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    $4.99 Special Price $2.99 As low as $2.49
  13. Base Clip To Hold Inline Filters, Membranes Housings and UV Lamps
    Base Clip To Hold Inline Filters, Membranes Housings and UV Lamps
    Base Mounting Clip To Hold Inline Filters, Membranes Housings and UV Lamps. Sold individualy, so order in even numbers. Use the 2 1/2" clip for reverse osmosis membrane housings. Use the 2" clip for inline post water filters and UV Lamps.
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    $3.99 Special Price $2.50 As low as $1.99

Easy TDS Membrane Performance 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.