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You are here: Home > R.O. Filters
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Membrane Operation
Below you will find common "generic" filters and membranes used in most Reverse Osmosis drinking water systems.
NOTE: Microline R.O. filters and parts are listed in their own separate category ( to the left )

LINK TO: Low water flow RO filters - Tank Pressure Problem

LINK TO: How often do we need to change the RO filters?
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Sediment Pre Filter Spun Poly P5 10 inch DC155014 Matrikx CTO 2  - 5 Micron 10" Carbon Block DCS1258 Granular Activated Carbon Cartridge Pentek GS-10RO-G 10" Inline GAC Filter - 1/4" JG
10" Granular Activated Carbon Cartridge
IN STOCK
Your Price: $10.00
10" Sealed Carbon 5 Micron Inline 20" x 2 1/2 " 5 Micron Pre-Filter Spun DC155016 Carbon Block  20" x 2 1/2" DC155635 Filter, 9.75 x 2.75, 30 Micron Pleated, 155017
9.75 x 2.75, 30 Micron Pleated Filter
IN STOCK
Our Price: $10.95
Automatic Shut-Off  ( ASO ) Valve w/JACO fittings Automatic Shut-Off  ( ASO ) Valve w/JG fittings Big Blue 20 inch Carbon Block Filter Replacement Big Blue 20 inch Sediment Filter Replacement
Big Blue Filter - Pentek R30-BB, W30PEHD, 155101-43 10" x 4 5/8" Sediment Poly-ester Filter rated 50 micron, the official Pentek R50-BB Drain Clamp 1/4" Under Sink RO Drain Clamp 3/8" Under Sink RO
Drain Clamp 1/4" Under Sink RO
IN STOCK
Your Price: $4.95
Drain Clamp 3/8" Under Sink RO
IN STOCK
Your Price: $4.95
Faucet - Brush Nickel Long Reach 1/4" Faucet Long Reach 1/4" Faucet Long Reach Air Gap S1089-02 Filter - Carbon Cartridge PROSYSTEM 38675
Faucet - Brush Nickel Euro Long Reach
IN STOCK
Your Price: $49.95
Faucet Long Reach 1/4" reference RF103
IN STOCK
Your Price: $24.95
Filter 20 inch 1 Micron Spun Polypropylene Case of 25 NP1-20 Filter 40 inch 1 Micron Spun Polypropylene Case of 15 MB0140000019 Filter Kit Pre and Post - North Star NSRO42C4 PN 7287506 Filter MB-01-20 1 Micron GE Osmonics 1013239 Case of 20
Filter 20 inch 1 Micron Spun Polypropylene Case of 25 NP1-20
Usually Ships in 1 to 2 Business Days
Your Price: $134.00
Filter Kit Pre and Post - North Star NSRO42C4 PN 7287506
Usually Ships in 24 Hours
Your Price: $49.00
Filter MB-25-9 7/8 GE Osmonics 1013232 Case of 40 Filterpack for HOMERO450, NR04-50 after 2015,NR04-Filterpack,NRO4 Fitting - 1/8 m x 1/4" tube  - Elbow PN JGCI480821W Fitting 1/4" stem x 1/4" quick connect Elbow JGPI220808S
Filter MB-25-9 7/8 GE Osmonics 1013232 Case of 40
Usually Ships in 1 to 2 Weeks
Your Price: $144.00
Fitting - 1/8 m x 1/4" tube - Elbow PN JGCI480821W
Usually Ships in 24 Hours
Your Price: $2.95
Fitting 1/4" stem x 1/4" quick connect Elbow JGPI220808S
Usually Ships in 1 to 2 Business Days
Your Price: $2.49
Fitting 1/4" Tube x 7/16"   RO Faucet Threaded Adapter Fitting 1/4" x 1/4"  Union Elbow JG-PI0308S S1406 Fitting 1/4" x 1/4" x 1/4" Union Tee JG-PI0208S 3/8" Tube x 7/16"   RO Faucet Threaded Adapter
Fitting 3/8" x 1/4" Reducing Union JG-PI201208S Fitting 3/8" x 3/8" Union JG-PI0412S 3/8" x 3/8" x 1/4" Reducing Tee JG-PI301208S Fitting 3/8" x 3/8" x 3/8" Union Tee JG-PI0212S
Fitting 3/8" x 3/8" Union JG-PI0412S
IN STOCK
Your Price: $3.49
Gauge Low Pressure 0 - 20 lbs. psi for tank checking 20 inch Big Blue Filter Housing w/ Pressure Relief and 1" inlet and outlet.  Takes 4.5" diameter x 20" tall filters. Housing Pre-Filter 3/4 inch DH150067 Housing Pre-Filter 3/4" x 20" DH150069 20-07B-PR067
Housing - Big Blue 20 inch - 150233
IN STOCK
Your Price: $74.00
Housing -  Slimline 1/4 inch threaded inlet and outlet openings Housing -  Slimline 3/8 inch threaded inlet and outlet openings Inline Flow Restrictor for 36 GPM RO # RCS300 Inline Flow Restrictor for 50 GPM RO # RCS420
Housing Slimline 3/8 inch DH150005
IN STOCK
Your Price: $16.95
Inline Flow Restrictor for 36 GPM RO # RCS300
Usually Ships in 24 Hours
Your Price: $9.95
Inline Flow Restrictor for 50 GPM RO # RCS420
Usually Ships in 24 Hours
Your Price: $9.95
TFC 50 gpd Membrane, Prefilter, Post, Inline for 4 stage RO Systems ( like the Flowmatic ). Membrane - TW30-1812-24  Filmtec 24 GPD TFC 11.75"  RMSTD24T,Membrane, 25 GPD TFC  reverse osmosis membrane - standard size 1.75" X 11.75" Membrane - 36 GPD TFC 11.75"  RMSTD36T Water Shield Membrane, 50GPD TFC 11.75" TW30-1812-50 , TFM-50
Membrane - 25 GPD TFC 11.75" RMSTD24T
IN STOCK
Your Price: $44.95
Membrane - North Star Model NSRO42C4 PN 7287514 Membrane 14 - 16 GPD CTA  11 3/4" Housing Clip ( one ) - RCL068 for standard Membrane, PN RP2500. Housing for standard Membrane, PN RP2500. <br>Should fit all reverse osmosis membrane - standard size 1.75" X 11.75"
Membrane Housing Clip ( one ) - RCL068
IN STOCK
Your Price: $1.00
Microline TFC-335  Reverse Osmosis 50 GPD Oring 1/4" Tubing Retainer Quick Connect O-ring Set of Two NF-RO-ORING used with System NRO4-50 O-ring for  Housing Pre-Filter 3/4 inch DH150067 10-07B-PR in 10" or 20" length.  PN 151120
Microline TFC-335 Reverse Osmosis 50 GPD
IN STOCK
Your Price: $299.00
O-ring for Housing Slimline 1/4 inch DH4200W25 PN DMOR4 O-ring for Housing Slimline 3/8 inch DH150005 PN 151121 Oring Sump Big Blue DM151122 OR-100 Permeate Pump - ERP1000
Oring Sump Big Blue DM151122 OR-100
IN STOCK
Your Price: $5.99
Permeate Pump - ERP1000
IN STOCK
Your Price: $78.95
Piercing Valve 1/4" pn S111801 Meter, TDS  range 0-9990 PPM Push In repair collet and oring .25 pn 7209566 Push In repair collet and oring .38 pn 7209574
Piercing Valve 1/4" pn S111801
IN STOCK
Your Price: $6.95
4 Stage  Reverse Osmosis 50 gpd TFC - CW5000, RO440, NRO4-50 Big Pump 3 Stage RO Watershield 36 gpd Classic 3 Stage RO Watershield 36 gpd Sani-System Liquid Sanitizer Concentrate Water Softeners or RO Units
RO Big Pump 3 Stage Watershield 36 gpd
IN STOCK
Your Price: $324.00
RO Classic 3 Stage Watershield 36 gpd
IN STOCK
Your Price: $244.00
Shut off Inline 1/4'' FQC X 1/4'' FQC SV040808W Shut off Inline 3/8'' FQC X 3/8'' FQC SV041212W Silicone 1 Gram Tube Lubricant for O-rings Tank NSF 3.2 R.O. Storage Tank White pn C2000 RO-132
Parker 1/4 F  x 1/4 JG Elbow Tank Shut Off Tank Shut Off 1/4 F x 3/8 JG Elbow PN S1037 Wrench for Big Blue Housings PN 150296 or SW-3r SW-3 Wrench for Slimline 1/4 inch DH4200W25 - DMWR100
Tank Shut Off 1/4 F x 1/4 JG Elbow
IN STOCK
Your Price: $8.00
Wrench Pentek 150295, Nelsen SW-2
   
 
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