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Microline Reverse Osmosis Drinking Water System
Filter Cartridges and Membranes for all models
Models TFC-335, TFC-435, TFC-4, TFC-25S, CTA-3, CTA-14S

C.T.A. 14D , C.T.A. 3 , C.T.A. 14S , C.T.A. 14DX , C.T.A. 14SX , T.F.C. 25D , T.F.C. 25DN , T.F.C. 25DX , T.F.C. 25DXN, T.F.C. 25S , T.F.C. 25SN  , T.F.C. 25SX , T.F.C. 25SXN , T.F.C. 3 , T.F.C. 4 , T.F.C. - 335, T.F.C. - 435, T.F.C.-300, T.F.C. -400 

Orders normally ship within 24 hours by Priority Mail

Original Clack Corporation Manufacturer Cartridges
Direct number for Microline warranty help is 1-608-846-3010
Clack Corporation, 4462 Duraform Lane, Windsor, WI 53598

Down Load Microline Manuals Here


Microline S7011 Sediment Prefilter 5 Micron Microline S7028 Sediment Carbon Prefilter Microline S7025 Carbon Post Filter
Microline S7011 Sediment Prefilter 5 Micron
Your Price: $3.85
Microline S7028 Sediment Carbon Prefilter
Your Price: $13.60
Microline S7025 Carbon Post Filter
Your Price: $8.85
S7011 Sediment Prefilter is used on All Microline CTA and BRS3 systems.
This is original manufacturer filter.
Carbon Block Sediment Prefilter S7028 for use in all Microline TFC Reverse Osmosis Drinking Water Systems.
This is original manufacturer filter.
S7025 Blue GAC Post Filter for use in all Microline Systems.
This is original manufacturer filter.
Microline S7206W GAC Post In-Line Filter Microline S7206W-JG GAC Post In-Line Filter Microline CTA 3 Set S7011, S1224RS, S7025
Microline S7206W GAC Post In-Line Filter
Your Price: $10.00
Microline S7206W-JG GAC Post In-Line Filter
Your Price: $12.50
Microline CTA-3 Reverse Osmosis Filter Set
Your Price: $54.00
6" In line GAC post filter S7206W
Replaces Microline S7206C and S7206C-06
Note: Requires fittings sold separately below, or re-use fittings from your old filter.
6" In line GAC post filter S7206W-JG
Used on newer Microline Models T.F.C.-4, and -435
NOTE: This cartridge filter has a 3/8" tube connection built into the cartridge at each end for quick and easy connection to a 3/8" tube running to your faucet, but you would not order for older models that have the 1/4" tubing running to the faucet ( order S7206W instead ).
Microline CTA-3 Reverse Osmosis Filter Set

Includes, as shown in photo:
( 1 ) S7011 - Sediment Prefilter,
( 1 ) S1224RS - CTA Membrane,
( 1 ) S7025 - GAC Post Filter

Used in Microline Model CTA-14S and CTA3 systems.

Always IN STOCK
Microline CTA 4  Set, S7011, S1224RS, S7025, S7206W Microline TFC 3 Set, S7028, S1227RS, S7025 Microline TFC-4 Set, S7028, S1227RS, S7025, S7206W
Microline CTA-4 Reverse Osmosis Filter Set
Your Price: $64.00
Microline TFC-3 Reverse Osmosis Filter Set
Your Price: $68.95
Microline TFC-4 Reverse Osmosis Filter Set
Your Price: $79.95
Microline CTA-4 Reverse Osmosis Filter Set

Includes,
as shown in photo;
( 1 ) S7011 - Sediment Prefilter,
( 1 ) S1224RS - CTA 14 gpd Membrane,
( 1 ) S7025 - GAC Post Filter,
( 1 ) S7206W - ( old # S7206C-06 ) 6" Inline GAC Post Filter

NOTE: The CTA-14D uses 3 filters and 1 CTA membrane

Always IN STOCK
Microline TFC-3 Reverse Osmosis Filter Set

Includes,
as shown in photo:
( 1 ) S7028 - Sediment Carbon Block Prefilter
( 1 ) S1227RS - TFC 25 gpd Membrane 
( 1 ) S7025 - GAC Post Filter


Always IN STOCK
Microline TFC-4 Reverse Osmosis Filter Set

Includes,
as shown in photo:
( 1 ) S7028 - Sediment Carbon Block Prefilter
( 1 ) S1227RS - TFC 25 gpd Membrane
( 1 ) S7025 - Blue GAC Filter
( 1 ) S7206W  - ( old # S7206C-06 ) 6" Inline GAC Post Filter

Microline complete filter and membrane replacement for TFC4, TFC25D

Always IN STOCK
Microline TFC-335 Set, S7028, S1229RS, S7025 Microline TFC-435 Set, S7028, S1229RS, S7025, S7206W-JG Microline Membrane 14 GPD CTA Revised Seal S1224 RS
Microline TFC-335 Reverse Osmosis Filter Set
Your Price: $72.00
Microline TFC-435 Reverse Osmosis Filter Set
Your Price: $82.95
Microline Membrane 14 GPD CTA Revised Seal S1224 RS
Your Price: $47.50
Microline TFC-335 Reverse Osmosis Filter Set

Includes, as shown in photo:
( 1 ) S7028 - Sediment Carbon Block Prefilter
( 1 ) S1229RS - TFC 50 gpd Membrane
( 1 ) S7025 - Blue GAC Filter

Microline complete filter and membrane replacement for TFC-335

Always IN STOCK
Microline TFC-435 Reverse Osmosis Filter Set

Includes,
as shown in photo:
( 1 ) S7028 - Sediment Carbon Block Prefilter
( 1 ) S1229RS - TFC 50 gpd Membrane
( 1 ) S7025 - Blue GAC Filter
( 1 ) S7206W-JG - ( for 3/8" tubing ) 6" Inline GAC Post Filter

Microline complete filter and membrane replacement for TFC-435

Always IN STOCK
Microline Membrane 14 GPD CTA Revised Seal S1224RS,
used in all CTA models since 1994.
Microline Membrane 25 -35 GPD TFC Revised Seal S1227RS Microline Membrane 50 GPD TFC Revised Seal S1229RS Membrane Clack 50 GPD TFC Revised Seal S1764RS
Microline Membrane 25 -35 GPD TFC Revised Seal S1227RS
Your Price: $52.50
Microline Membrane 50 GPD TFC Revised Seal S1229RS
Your Price: $57.50
Membrane Clack 50 GPD TFC Revised Seal S1764RS
Your Price: $49.95
Membrane S1227RS = 25 GPD TFC Revised Seal Membrane used in Microline TFC3,TFC4D and 25S since 1994.
This is original manufacturer membrane.
Membrane S1229RS = Newer 50 GPD TFC Revised Seal Membrane used in Microline TFC-335, and TFC-435
S1229RS is used in the newer "35 gpd" models, such as the T.F.C. - 335 and - 435.
This is original manufacturer filter.
Newer 50 GPD TFC Revised Seal Membrane used in Clack TFC-300, and TFC-400
S1764RS is used in the newer "50 gpd" models that look like Microline, but do not use this name, but instead has model number like the T.F.C. - 300 and - 400.
Meter, TDS  range 0-9990 PPM Wrench Microline Newer Sump S3072 Oring - Sump New Style Microline
Meter, TDS range 0-9990 PPM
Your Price: $29.95
Wrench Microline Newer Sump S3072
Your Price: $3.95
Oring - Sump New Style Microline
Your Price: $0.89
Meter measures the Total Dissolved Solids ( TDS ) in your water.
Use to determine if your Membrane is still working properly.
Offers Standard ( 0 - 999 ppm ) and High ( 1000 - 9990 ppm ) range for testing brackish water sources.
Wrench Microline Newer Sump used since 1999.
Part # S3072
S3069 - Oring used in one piece white New Style Microline Housing
Silicone 1 Gram Tube Lubricant for O-rings Oring Sump Old Style Microline Wrench for Older Microline that have the Black Nut
Silicone 1 Gram Tube Lubricant for O-rings
Your Price: $1.89
Oring Sump Old Style Microline N1021
Your Price: $3.95
Wrench for Older Microline that have the Black Nut
Your Price: $5.95
One gram of food grade silicone for use with o-rings, gaskets and seals.
Enough to lubricate about a dozen or more o-rings and seals.
These tubes come from one of the leading valve manufacturers.
Oring Sump Old Style Microline Wrench for Older Microline system that used a large Black Nut at the top of each filter sump housing.
The Large Black Nut has to be unscrewed and then the housing would come off.
Microline changed to a one piece filter sump housing without this Black Nut around 1999.
Tester, TDS  Good Bad for City Water 40 PPM Tester, TDS  Good Bad for Well Water 80 PPM Sump Black Nut Older Microline R.O.
Tester, TDS Good Bad for City Water 40 PPM
Your Price: $9.95
Tester, TDS Good Bad for Well Water 80 PPM
Your Price: $9.95
Sump Black Nut Older Microline R.O. - OBSOLETE
Your Price: $8.95
Tester measures the Total Dissolved Solids ( TDS ) in your water.
If TDS is above 40 ppm, it will Test BAD, otherwise, the Green GOOD light will come on.
NOTE: Works best on City water or well water whose starting TDS is less than 400 ppm.
Tester measures the Total Dissolved Solids ( TDS ) in your water.
If TDS is above 80 ppm, it will Test BAD, otherwise, the Green GOOD light will come on.
NOTE: Works on all City water or most well water whose starting TDS is less than 1000 ppm.
Large Black Sump Nut Used on older Microline systems.
Not a stock item,
but can be special ordered.
The style change occurred around 1999.
1/4 3/8 1/4
1/4" Tube X 1/4" m Thread Male Connector
Your Price: $2.00
3/8" Tube x 1/4" m Threaded Male Connector
Your Price: $2.75
1/4" Tubing Retainer Microline
Your Price: $1.49
1/4" Tube  X 1/4" m Thread Male Connector 3/8" Tube x 1/4" m Threaded Male Connector 1/4" Tubing Retainer Microline.
This is the locking ring that holds the tubing in place.
Oring 1/4 Drain Restrictor Red 40 GPD w/Barb Drain Restrictor Green w/Barb S2116-5
Oring 1/4" Tubing Retainer Quick Connect
Your Price: $1.00
Drain Restrictor Red 40 GPD w/Barb
Your Price: $2.99
Drain Restrictor w/Barb S2116-5
Your Price: $2.99
Oring for 1/4" Tubing Retainer John Guest and Parker Quick Connect. Drain Restrictor Red 40 GPD w/Barb.
New version is Green.
Drain Restrictor Green w/Barb used on newer Microline TFC-335 and - 435.
Can be used with older 25 gpd membrane models as well as today's newer 50 gpd membrane models.
Drain Restrictor Yellow 60GPD w/Barb Drain Restrictor Yellow 60GPD (TFC 25) Older Microline New Sump Housing S7029-09
Drain Restrictor Yellow 60GPD w/Barb
Your Price: $2.99
Drain Restrictor Yellow 60GPD (TFC 25) Older
Your Price: $5.00
Microline New Sump Housing S7029-09
Your Price: $19.95
Drain Restrictor Yellow 60GPD w/Barb
Microline is now only using the Green ( S2116-5 ) for their TFC membranes, and this is what we will be sending to replace the Yellow versions.
OBSOLETE Product = Drain Restrictor Yellow 60GPD(TFC 25) Older
Small bullet shaped.
Replacement is new Green Drain Restrictor with "barbed" end.
Microline New Sump Housing used since late 1998.
Part Number S7029-09
Limit 3 per customer.
Microline TFC-335  Reverse Osmosis 50 GPD Tank NSF 3.2 R.O. Storage Tank White pn C2000 RO-132 Romate 4 Tank - C2233-03  Obsolete
Microline TFC-335 Reverse Osmosis 50 GPD
Your Price: $289.00
Tank NSF 3.2 R.O. Storage Tank White pn C2000 RO-132
Your Price: $54.00
Romate 4 Tank - C2233-03 Obsolete
Microline Reverse Osmosis ( STF35ANGNM or TFC-335 ), is now 35 gallon per day with a 50 gpd T.F. C. membrane ( S1229RS ), Carbon Block Prefilter ( S7028 ), GAC Post Filter ( S7025 ) with storage tank and all accessories to install.

3.2 gallon R.O. Storage Tank, White, pre-charged to 8 psi, is a compatible replacement for any brand of reverse osmosis.
Has standard 1/4" mpt fitting used with all undersink RO Storage Tank systems.
PN C2000 or RO-132
Romate 4 Tank - Microline part # C2233-03 is now obsolete.
Please select a different holding tank.
All RO Holding tanks will work, as they have the same 1/4" male thread fitting to attach your shut off elbow.
Gauge Low Pressure 0 - 20 lbs. psi for tank checking Tank Shut Off 1/4 F x 3/8 JG Elbow PN S1037 Parker 1/4 F  x 1/4 JG Elbow Tank Shut Off
Gauge Low Pressure 0 - 20 lbs. psi for tank checking
Your Price: $9.95
Tank Shut Off 1/4 F x 3/8 JG Elbow PN S1037
Your Price: $8.95
Parker 1/4 F x 1/4 JG Elbow Tank Shut Off
Your Price: $8.00
Low Pressure Gauge in one pound increments to check your R.O. Storage Tank ( proper pressure is 7 - 8 lbs. ). 1/4" fpt x 3/8" John Guest - RO Tank Shut Off Elbow, made by Parker for Microline ( pn S1037 ).
Also, can be used on an R.O. Holding Tank that requires a 3/8" feed line connection.
1/4" fpt x 1/4" John Guest RO Tank Shut Off Elbow, made by Parker for Microline.
Can be used on all under the sink RO holding tanks ( since they all have 1/4" mpt connections ).
Faucet Long Reach Air Gap S1089-02 3/8 Drain Clamp 3/8
Faucet Long Reach Air Gap S1089-02
Your Price: $39.00
Fitting 3/8" Tube x 7/16" RO Faucet Threaded Adapter
Your Price: $6.00
Drain Clamp 3/8" Under Sink RO
Your Price: $4.95
Long Reach Faucet with Air Gap and 1/4" O.D. water line fitting.
Has connections for three lines used with "air gap" type Reverse Osmosis installations.
3/8" Tube x 7/16" uns Female Threaded Adapter used with RO faucet ( 59JGCI3212U7S ). Drain Clamp with 3/8" connection. PN S1117-01
For drain lines that come down from the Air Gap Faucet.
Piercing Valve 1/4 Duckbill Check Valve 1/8 Duckbill CV Retainer Microline
Piercing Valve 1/4" pn S111801
Your Price: $6.95
Duckbill Check Valve 1/8" Microline
Your Price: $3.50
Duckbill CV Retainer Microline
Your Price: $0.75
Piercing Valve 1/4" pn S111801.
Used to tap into cold water line under sink.
Duckbill Check Valve 1/8" Microline Duckbill Check Valve Retainer Microline.
Elbow - 1/4 post x 3/8 tube Microline PK-A6TEU4-MG 3/8 Fitting 1/4
Elbow - 1/4 post x 3/8 tube Microline PK-A6TEU4-MG
Your Price: $5.95
Fitting 3/8" x 3/8" x 1/4" Reducing Tee JG-PI301208S
Your Price: $6.95
Fitting 1/4" x 1/4" x 1/4" Union Tee JG-PI0208S
Your Price: $4.95
PK-A6TEU4-MG  1/4" post x 3/8" tube elbow used on the top of the Microline Manifold. The yellow tube to the tank is connected to this fitting. 3/8" x 3/8" x 1/4" Reducing Tee JG-PI301208S Fitting 1/4" x 1/4" x 1/4" Union Tee JG-PI0208S
Fitting 1/4 3/8
Fitting 1/4" x 1/4" Union Elbow JG-PI0308S S1406
Your Price: $2.95
Sani-System Liquid Sanitizer Concentrate Water Softeners or RO Units
Your Price: $2.49
Tubing 3/8" OD Black Tubing sold by Foot
Price per Foot: $0.33
ENTER # of Feet You Need
Fitting 1/4" x 1/4"  Union Elbow JG-PI0308S S1406 Liquid Sanitizer Concentrate for sanitizing Water Softeners, RO Units, and Water Coolers.
Cleans and Restores Your System
3/8" OD Black Tubing sold by Foot
Oring Manifold Old Style Microline Oring Automatic Shut Off Valve Cap Microline BRS-3 Silver Impregnated Ceramic Cartridge
Oring Manifold Old Style Microline
Your Price: $1.00
Oring Automatic Shut Off Valve Cap Microline
Your Price: $1.00
BRS-3 Silver Impregnated Ceramic Cartridge OBSOLETE
Oring used on side of manifold on Old Style Microline ( pre 1999 ).
Three are used between manifold and Inlet/Outlet Block.
Oring Automatic Shut Off Valve Cap Microline S7026 is used in the Microline BRS-3 Drinking Water System.
The best alternative to a Reserve Osmosis System.
Original Replacement from Clack Corporation.
Elbow for Drain Restrictor Yellow TFC Microline 1/4 Meter, TDS  range 0-999 PPM Hanna Digital
Elbow for Drain Restrictor Older Microline S2054-01
Your Price: $11.50
1/4" Tubing
Your Price: $0.25
Meter, TDS range 0-999 PPM Pocket Digital
Your Price: $24.95
Elbow used with the "bullet" style Drain Restrictor Yellow 60GPD(TFC 25) .
This ELBOW is 1/8" m x 1/4" polytube connection.
1/4" Tubing - Sold by the foot Meter measures the Total Dissolved Solids ( TDS ) in your water.
Use to determine if your Membrane is still working properly.