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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
Also the non-NSF version sold under various "brands" such as WaterShield 50 ( Water Shield 50 ), and others, use S7028, S7025, and S1764RS.

Orders normally ship within 24 hours by Priority Mail

Microline is made by Clack Corporation
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 S7025 Carbon Post Filter
IN STOCK
Your Price: $9.50
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-JG GAC Post In-Line Filter Microline CTA 3 Set S7011, S1224RS, S7025 Microline CTA 4  Set, S7011, S1224RS, S7025, S7206W
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 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 Set, S7028, S1227RS, S7025 Microline TFC-4 Set, S7028, S1227RS, S7025, S7206W Microline S7206W Inline 6 inch GAC Post Filter
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 S7206W Inline 6 inch GAC Post Filter
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

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
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
Wrench Microline Newer Sump S3072
IN STOCK
Your Price: $4.49
O-ring - Sump New Style Microline
IN STOCK
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
O-ring Sump Old Style Microline SN1021
IN STOCK
Your Price: $2.99

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.

O-ring 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.
Sump Black Nut Older Microline R.O. 1/4" Tube  X 1/4" m Thread Male Connector 3/8" Tube x 1/4" m Threaded Male Connector
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" Tube  X 1/4" m Thread Male Connector 3/8" Tube x 1/4" m Threaded Male Connector
1/4" Tubing Retainer Microline Oring 1/4" Tubing Retainer Quick Connect Drain Restrictor Red 40 GPD w/Barb
1/4" Tubing Retainer Microline
Currently Unavailable
Drain Restrictor Red 40 GPD w/Barb
IN STOCK
Your Price: $2.99
1/4" Tubing Retainer Microline.
This is the locking ring that holds the tubing in place.
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 w/Barb S2116-5 Drain Restrictor Yellow 60GPD w/Barb Drain Restrictor Yellow 60GPD (TFC 25) Older
Drain Restrictor w/Barb S2116-5
IN STOCK
Your Price: $2.99
Drain Restrictor Yellow 60 GPD w/Barb
IN STOCK
Your Price: $2.99
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
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 S7029-09 Microline TFC-335  Reverse Osmosis 50 GPD Tank - Small R.O. Storage Tank RT103
Microline New Sump Housing S7029-09
Usually Ships in 24 Hours
Your Price: $19.95
Microline TFC-335 Reverse Osmosis 50 GPD
IN STOCK
Your Price: $299.00
Microline New Sump Housing used since late 1998.
Part Number S7029-09
Limit 3 per customer.
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.

Tank - Small R.O. Storage Tank RT103, C2000, pre-charged to 8 psi, is a compatible replacement for a small tank where space is lacking.
Tank measures 9 inches in diameter and just over 13" tall.
Has standard 1/4" mpt fitting ( sold separately ) used with all undersink RO Storage Tank systems.
Tank NSF 3.2 R.O. Storage Tank White pn C2000 RO-132 Romate 4 Tank - C2233-03  Obsolete Gauge Low Pressure 0 - 20 lbs. psi for tank checking
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.
Low Pressure Gauge in one pound increments to check your R.O. Storage Tank ( proper pressure is 7 - 8 lbs. ).
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 Faucet Long Reach Air Gap S1089-02
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 ).
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.
Fitting 1/4" Tube x 7/16"   RO Faucet Threaded Adapter 3/8" Tube x 7/16"   RO Faucet Threaded Adapter Fitting 3/8" x 3/8" Union JG-PI0412S
Fitting 3/8" x 3/8" Union JG-PI0412S
IN STOCK
Your Price: $3.49
1/4" Tube x 7/16" uns Female Threaded Adapter used with RO faucet ( 59JGCI3208U7S ). 3/8" Tube x 7/16" uns Female Threaded Adapter used with RO faucet ( 59JGCI3212U7S ). Fitting 3/8" x 3/8" Union JG-PI0412S
Drain Clamp 3/8" Under Sink RO Piercing Valve 1/4" pn S111801 Duckbill Check Valve 1/8" Microline
Drain Clamp 3/8" Under Sink RO
IN STOCK
Your Price: $4.95
Piercing Valve 1/4" pn S111801
IN STOCK
Your Price: $6.95
Duckbill Check Valve 1/8" Microline
IN STOCK
Your Price: $4.95
Drain Clamp with 3/8" connection. PN S1117-01
For drain lines that come down from the Air Gap Faucet.
Piercing Valve 1/4" pn S111801.
Used to tap into cold water line under sink.
Duckbill Check Valve 1/8" Microline
Duckbill CV Retainer Microline Elbow - 1/4 post x 3/8 tube Microline PK-A6TEU4-MG 3/8" x 3/8" x 1/4" Reducing Tee JG-PI301208S
Duckbill CV Retainer Microline
IN STOCK
Your Price: $2.00
Duckbill Check Valve Retainer Microline. 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" x 1/4"  Union Elbow JG-PI0308S S1406 Fitting 3/8" x 3/8" x 3/8" Union Tee JG-PI0212S
Fitting 1/4" x 1/4" x 1/4" Union Tee JG-PI0208S Fitting 1/4" x 1/4"  Union Elbow JG-PI0308S S1406 Fitting 3/8" x 3/8" x 3/8" Union Tee JG-PI0212S
Fitting 3/8" x 1/4" Reducing Union JG-PI201208S 3/8" OD Black Tubing sold by Foot
Tubing 3/8" OD Black Tubing sold by Foot
IN STOCK
Price per Foot: $0.33
ENTER # of Feet You Need
Fitting 3/8" x 1/4" Reducing Union JG-PI201208S 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
O-ring Manifold Old Style Microline
IN STOCK
Your Price: $1.00
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.
Automatic Shut Off ASO rebuild kit Microline Elbow for Drain Restrictor Yellow TFC Microline 1/4" Tubing - Sold by the foot
Automatic Shut Off ASO rebuild kit Microline
Usually Ships in 1 to 2 Business Days
Your Price: $18.00
1/4" Tubing - Sold by the foot
IN STOCK
Price per Foot: $0.25
ENTER # of Feet You Need
This rebuild kit for the Microline Reverse Osmosis made by Clack Corporation,
INCLUDES ( 1 ) of each of below:

Part 3 s2013 aso cap o-ring
Part 4 s2011 aso diaphragm -large
Part 5 s2007 aso piston
Part 6 s2006 aso piston ring
Part 7 s2010 aso diaphragm-small
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
Microline New Manifold S2128-03M
Microline New Manifold S2128-03M RSNFSTF0405M38
Usually Ships in 24 Hours
Your Price: $99.00
Microline New Manifold S2128-03M used since 1999.
And matches design used since 2005.
Newer part number S2128-M or SNFSTF0405M38
SPECIAL ORDER - But we usually have one in stock.