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Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

PJD ® 3000 3 Stage CTA System CTA Reverse Osmosis Membrane

PJD ® 3000 3 Stage CTA System CTA Reverse Osmosis Membrane

PJD ® 3000

3 Stage CTA Reverse Osmosis System Replacement Water Filters & Membranes

2 vertical filter housings and one top mounted horizontal CTA reverse osmosis RO standard size membrane housing.

CTA Membranes are officially discontinued.  It is easy to update your system to the superior TFC/TFM (thin film composite - thin film membrane) high performance menbranes.  You will need to upgrade your sediment pre filter to a carbon pre filter.  TFC-TFM membranes are chlorine intolerant and require a carbon pre filter or KDF pre filter to remove the chlorine prior to contact with the membrane.  Then chose your desired membrane GPD rate and matching flow restrictor.  That's it.  For more on upgrading your CTA (cellulose triacetate) membrane  see Membrane Upgrading.

 


3 Stage Reverse Osmosis System With Air Gap Faucet Connection Diagram

How To Check Tube and Fitting Size

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

Reverse Osmosis System Parts Department

Learn How To See If Your Reverse Osmosis Membrane Needs Replaced

Water Filter and Reverse Osmosis Membrane Change Guide

Mineral Filter Add On Post Filters For Reverse Osmosis Systems

 

  1. GE Osmonics ® Purtrex PX-5-978 Sediment Replacement Water Filter # 93023
    GE Osmonics ® Purtrex PX-5-978 Sediment Water Filter # 93023
    GE Osmonics ® Purtrex PX-5-978 5 Micron Sediment Water Pre Filter. True-graded density pure polypropylene depth replacement water filter. # 93023 9 7/8" long X 2 1/2" diameter. 40 per case, sold individually. Order a case and save even more.
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    $8.99 Special Price $5.99 As low as $3.99
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  2. GGN-10-2-1000
    GGN-10-2-Block Premium Quality Carbon Block Replacement Water Filter
    10 Micron Premium Carbon Block Filter. Replaces KX Carbon Block Water Filter # 10-250-190-975 Compatible Replacement. The perfect carbon block for your standard reverse osmosis system. Extruded Carbon Block Water Filter. 9 3/4" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 20 per case, sold individually. Order a case and save even more. GGN-10-2-BLOCK
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    $12.99 Special Price $9.99 As low as $7.79
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  3. GOES GREEN- Premium 5 Micron Coconut Carbon Block Filter- 1000
    Goes Green 5 Micron Premium Coconut Carbon Block
    Goes Green 5 Micron Premium Extruded Carbon Block Water Filter provides optimal VOC reduction and high chemical absorptive capacity. 9 3/4" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 25 per case, sold individually. Order a case and save even more.
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    $23.99 Special Price $15.99 As low as $11.99
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  4. WFO TFM-18 Reverse Osmosis Membrane - TFC 18 GPD
    WFO TFM-18 Reverse Osmosis Membrane - TFC 18 GPD

    WFO-TFM-18 Desal TFM-18 Compatible RO Membrane.  Replaces Desal Osmonics TFM-18 Reverse Osmosis Membrane.

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    $44.99 Special Price $33.98
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  5. 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
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  6. Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench
    Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-1 # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-1 Water Filter Housing Wrench. Fits 4" Slim Line Housings. (Slim Line Housings Have A 3 1/2" diameter "O" Ring) Ametek # 150294 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. Fits most standard style RO systems. Replaces 150294. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Order New O-rings And Be Sure To Lube Them With Dow 111 Silicone Sealant To Prevent Leaks
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    $9.99 Special Price $6.99 As low as $4.99
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  7. PENTEK- #151121- Slim-Line Water Filter Housing Replacement - 1000
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring.
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    $5.69 Special Price $4.99 As low as $3.00
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  8. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

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    $5.99 Special Price $3.99 As low as $1.79
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  9. Pro Products Sani System Water Filtration System Sanitizer
    Pro Products Sani System Water Filtration System Sanitizer
    Sani-System ® Pro Products is proud to introduce Sani-System, the first and only EPA product approved for sanitizing water softeners, RO units and Water Coolers. Alos NSF certified. Sani System is proven to kill 99.9% of E. coli, E. coli O157:H7, Staphylococcus aureus, Listeria monocytogenes and other harmful bacteria. It does not use chlorine, other oxidizers or acids that can harm water softener equipment parts. Use is simple; each dose comes in a pre-measured pouch. Just cut, pour and regenerate softener. No measuring, No mess! Sanitizing Equipment! Applications Interior Surfaces of Water Softeners, Reverse Osmosis (RO) Units, Ice Machines, Water Coolers, Water Holding Tanks and Pressure Tanks. Pro Products Sani System Sanitizer. 0.25 fl. oz. concentrate is perfect for your RO reverse osmosis drinking water system sanitizing..
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    $7.99 Special Price $4.99 As low as $2.49
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  10. GGN-Faucet-AG-P-Chrome Air Gap Faucet-Long Reach-1000
    Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-P

    Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-P 

    The perfect replacement faucet for under sink reverse osmosis drinking water systems.  Works as air gap or non air gap.  Quick release when drawing a glass of water or lock it on to fill a pitcher or cooking pot.   This is a top selling replacement faucet for most reverse osmosis systems.

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    $39.99 Special Price $29.99
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  11. Puroflo FLR-868 faucet
    Puroflo FLR-868 Chrome Non-Air Gap Faucet
    Puroflo FLR-868 Long Reach Chrome Non-Air Gap Premium Faucet is NSF Certified. Smooth operating ceramic disk design with 12" High Reach Neck Design. California Prop. 65 and AB1953 compliant. Low Lead Level
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    $41.99 Special Price $29.99
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  12. Stainless Steel Designer Faucet for RO Reverse Osmosis & Drinking Water Filtration Systems
    Stainless Steel Designer Faucet for RO Reverse Osmosis & Drinking Water Filtration Systems
    Stainless Steel Designer Faucet for Drinking Water Systems. Beautiful designer faucet for beautiful kitchens. Air Gap / Non Air Gap design, single or three tube connection. Made of high quality 304 stainless steel incorporating a smooth operating ceramic disk element for extended reliability and quality. Great replacement upgrade for RO Reverse Osmosis and drinking water filtration systems. Lever Style Handle. High Reach Neck Design (12" / 305mm) 360 Degree Swivel Neck. Unique Protective Spout Tip which Prevents After Drip. 2 1/4" Base Diameter (57 mm) Drilled Hole Size Needed is 7/8".
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    $219.99 Special Price $89.95
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  13. 4 Gallon Reverse Osmosis Water Tank Replacement - GGN-Tank-4-Pro 3.2
    4 Gallon Reverse Osmosis Water Tank Replacement - GGN-Tank-4-Pro 3.2

    4 Gallon Reverse Osmosis Tank GGN-Tank-4 Pro 3.2. This is the perfect replacement tank for most RO reverse osmosis systems.   Stainless Steel valve connector.  Perfect replacement for all home RO reverse osmosis drinking water systems.  

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    $79.99 Special Price $49.99
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  14. 4 Gallon RO Water Tank-1000
    4 Gallon Water Tank for RO Reverse Osmisis Drinking Water Systems - GGN-Tank-PL4
    4 Gallon Water Tank for RO Reverse Osmosis Drinking Water Systems - GGN-Tank-PL4- Plastic 4 Gallon (15L) Water Storage Tank. 10.83" Diameter X 16.15" Height. NSF Certified. UPC #850901003514
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    $79.99 Special Price $49.99 As low as $44.99
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  15. SS Stainless Steel Reverse Osmosis Storage Tank - Premium Quality
    SS Stainless Steel Reverse Osmosis Storage Tank - Premium Quality

    SS Stainless Steel Reverse Osmosis 4.4 Gallon Total Capacity Tank

    This is one of the finest RO tanks we have ever seen. The patented O-ring seal on the air stem assures "set and forget" pressure settings. Keeping the pressure in the tank set correctly is an important factor in operating your RO system. Approximately 14" high (without the tank valve) X 11" in diameter.

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    $149.99 Special Price $88.99 As low as $75.99
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  16. Inversion Tank Stand Reverse Osmosis System
    Inversion Tank Stand Reverse Osmosis System

    Inversion Stand for Water Tank on  Reverse Osmosis Systems.  Flip the tank over and remove the weight of the water from the bladder.  Pressure and storage capacity are unchanged.  Extends the life of your reverse osmosis water tank.

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    $27.99 Special Price $17.99
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  17. Air Pressure Gauge for Reverse Osmosis Water Accumulator Tanks -1000
    Air pressure gauge for reverse osmosis water accumulator tanks
    Air pressure gauge for reverse osmosis water accumulator tanks - Specially calibrated for reverse osmosis system tanks. Scale from 1 to 20 PSI. Large scale reading over small PSI range allows optimum accuracy. Just like car tires lose air pressure, so does the bladder of your reverse osmosis water accumulator tank. Improper tank air pressure will cause your system to operate improperly. This is a must for all reverse osmosis system owners.
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    $24.99 Special Price $17.99 As low as $12.99
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  18. TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. Simple to use for Reverse Osmosis membrane monitoring. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers to monitor their RO membrane.
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    $49.99 Special Price $37.99 As low as $17.99
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  19. TDS Meter Inline Water Tester DM1 - HM Digital Dual Mode Reading
    TDS Meter Inline Tester- Dual Mode Reading - Easily Installs Inline - Very Simple To Use
    TDS Meter - Dual Mode - Installs Inline - Check the TDS level with the push of a button. Now you can easily check to make sure the water from your reverse osmosis system is top quality. Measure the tap water coming in vs. the purified water going out of your system at any time. Very easy installation. FEATURES Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use. Comes equipped with John Guest Quick-Connect T-fittings as shown. Installs quickly and easily. SPECIFICATIONS Range: 0-9990 ppm Accuracy: ±2% Always know if your RO membrane is performing correctly!
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    $49.99 Special Price $39.99 As low as $19.99
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  20. The Terminator T-2000 Automatic Shut-Off Valve for the Reverse Osmosis System-ASO ASV-1000
    The Terminator T-2000 Automatic Shut Off Valve for reverse osmosis system - ASO ASV
    The Terminator T-2000 automatic shut off valve for reverse osmosis system. The Terminator 2000 will monitor the tap water pressure and the purified tank pressure. As the tank fills to about 2/3 of the tap water pressure, the Terminator will turn the system off. This can save as much as 1,500 gallons of water per month when compared to a system without a valve. The system is designed to turn back on after a significant amount of purified water has been drawn from the holding tank. This feature helps reduce TDS Creep (artificial increase of TDS in the holding tank) which is caused by rapidly turning on and off RO systems. The Terminator can be installed in a vertical or horizontal position. The valve uses 1/8 inch FPT ports, allowing you to use ¼ or 3/8 inch tubing Installation: 1. Pre-filtered tap water goes into port #1 on the end. 2. This water then comes out port #2 and goes to the inlet side of the RO membrane housing. 3. Purified RO water must pass by port #3. Put a “T” or an “EL” fitting here. ASO ASV
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    $28.99 Special Price $19.99 As low as $17.99
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  21. Inline Water Shut Off Valve-1000
    Inline Water Shut Off Valve - Great For Refrigerators And Ice Machines
    Inline Water Shut Off Valve With 1/4" or 3/8" Quick Connect Fittings - Very easy to install and use. - Great for refrigerators, UV systems, chillers, hot pots, coffee machines, ice machines etc.
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    $14.99 Special Price $9.99 As low as $6.99
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  22. John Guest Poly Tubing 1/4" For Pure Drinking Filter Water Systems
    John Guest ® Poly Tubing 1/4" For Pure Drinking Filter Water Systems

    John Guest ® Poly Tubing 1/4" For Pure Drinking Filter Water Systems

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    $0.45 Special Price $0.27 As low as $0.19
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  23. John Guest Poly Tubing 3/8" For Pure Drinking Filter Water Systems
    John Guest ® Poly Tubing 3/8" For Pure Drinking Filter Water Systems
    John Guest ® Poly Tubing 3/8" O.D. (outer diameter) For Pure Drinking Water Systems - 3/8" O.D. (Outer Dimension) High Grade Drinking Water Tubing. Speedfit quick connector compatible. For Use With Optional Drain Saddle For Air Gap Faucet. Sold by the foot. Order 20 to get 20 feet.
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    $0.50 Special Price $0.32 As low as $0.24
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  24. John Guest ® Tee Connector For water Systems - Quick Connectors
    John Guest ® Tee Connector For Water Systems - Quick Connectors
    John Guest ® Tee Connector - Quick Connectors - All equal size connections or one port different for adaption. The body is produced in acetal copolymer. 'O'Rings are nitrile rubber. The collet is produced in acetal copolymer with stainless steel teeth. PI0208S , PI0212S , PI301208S , PI301612S.
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    $14.99 Special Price $9.99 As low as $7.99
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  25. Jaco ® Elbow Connector Fitting - 90 degree - Sold As a Pair
    Jaco ® Elbow Connector Fitting - 90 degree - Sold As a Pair
    Jaco ® Elbow Connector Fitting - 90 Degree - Sold as a Pair. Tube x MNPT Thread Sizes.
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    $8.99 Special Price $4.99 As low as $3.99
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  26. John Guest Super Speedfit Quick Connector - Male - Elbow
    John Guest ® Super Speedfit Quick Connector - Male - Elbow
    ohn Guest ® Super Speedfit Quick Connector - Male - Elbow - John Guest Super Speedfit Quick Connectors - Male - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI480821S , PI480822S , PI480823S , PI481222S , PI481223S
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    $8.99 Special Price $4.99 As low as $3.99
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  27. John Guest Angle Stop Water Valve
    John Guest ® Angle Stop Water Valve
    John Guest ® Angle Stop Water Valve - Makes installation a snap. Very simple to use. PPASV121208W and PPASV121212W
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    $19.99 Special Price $12.99 As low as $10.99
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  28. Easy Tap Water Feed Valve for Water Filter Systems - 2000
    Easy Tap Water Feed Valve
    Easy Tap Water Feed Valve - High flow tap valve. Follow the pipe up from the shut-off valve toward faucet until you reach a coupling nut (may be all the way up to the faucet). Unscrew coupling nut. Screw brass easy tap onto previous location of coupling nut. Hand tighten and then one more complete turn with wrench. Re-attach water line coupling nut to easy tap. The valve on the side of the easy tap is the shut off valve for your new RO system. If the handle is turned clockwise all of the way, this is the "OFF" position for your new RO system. Counterclockwise all of the way is the "ON" position.
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    $19.99 Special Price $12.99 As low as $9.99
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  29. Chiller Daddy CHL-750XL Under Sink Water Chiller - 110 Volt
    Chiller Daddy CHL-750XL Under Sink Water Chiller - 110 Volt

    110 Volt Chiller Daddy ® CHL-750XL Under Sink Water Chiller -  NEW TANK IS 25% LARGER than our previous chillers.  Output Cold Tank Volume : 3 liter (0.8 gallon) Exterior cabinet is made of RUST FREE 304 SS Stainless Steel. Cold Water Container is made of SUS304 Stainless Steel. Inlets and outlets are 1/4" stainless steel 304. Includes a pair of quick connectors for a simple hook up. Output of Cold Water : 1.34 Gallons Per Hour (5 Liters 5L/H (<10C) Continuous Cold Water Output(cc/hr) 5,400. This is a high output, heavy duty undersink drinking water chiller. Great for use with a Reverse Osmosis System or drinking water filter system.

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    $499.99 Special Price $349.99 As low as $310.99
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  30. UV-SS2-1000
    UV-SS2 1 Gallon per Minute UV Ultraviolet Water Sterilizer

    304 Stainless Steel 1 GPM UV Assembly With 1/4" FNPT Connections. 6 watt Phillips UV Lamp, quartz sleeve and 100 volt transformer.  Individually boxed.  Great addition to any RO reverse osmosis system or undercounter drinking water filter system.

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    $99.99
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  31. Leak Detector-SAS-14-1000
    Leak Detector SAS-414 - Water Sensor and Shut Off Valve

    Leak Detector SAS-414 - Water Sensor and Shut Off Valve

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    $79.99 Special Price $49.95
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  32. 3M 6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    3M 6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    6 in 1 Home Water Test Kit by 3M. Use this 3M DIY water quality test for convenient on-site testing. The 3M DIY water quality test kit provides quick analysis.
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    $15.75 Special Price $12.99
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Parts Department
Parts Department

Replacement water faucets, water pumps, tanks, UV, drain saddles, o-rings, wrenches, valves, water accumulator tanks, fittings, TDS meters, water filters, reverse osmosis membranes, parts for reverse osmosis and pure water drinking systems. Low prices and fast shipping online since 1999. Quantity discounts. Millions sold.

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Water Chillers
Water Chillers

Chiller Daddy Water Chillers for RO reverse osmosis water purification systems - Chiller Daddy CHL-501 & CHL-750XL Undersink and under cabinet water chillr.

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Installation and Trouble Shooting Guide
Installation and Trouble ...

Water Filter System and Reverse Osmosis System Installation and Service Guide. Huge inventory of replacement water filters , reverse osmosis membranes and maintenance service parts. Low prices and fast shipping online since 1999. Millions sold.

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Faucets for RO Reverse Osmosis or Filter Systems
Faucets for RO Reverse ...

Replacement Air Gap Faucets For Reverse Osmosis RO Systems, Pure Water Systems And Water Coolers - TouchFlo Faucets

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Leak Controllers
Leak Controllers

Leak Controller For Reverse Osmosis Systems, Refrigerators, Ice Makers and Coffee Machines - AquaGate

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Tanks
Tanks

Reverse Osmosis Storage Tanks - Water tanks for reverse osmosis drinking water systems. Low prices and fast shipping online since 1999. Millions sold.

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Easy TDS Membrane Performance Calculator
See If It is Time To Replace Your Membrane
Submit

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.

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* PJD is the registered trademark of PJD, the manufacturer of PJD brand drinking water system filtration equipment.  The replacement water filters and reverse osmosis membranes listed above are not manufactured or endorsed by PJD.  Rather, these replacement filters and RO membranes are manufactured by other companies.  While these filters and membranes are compatible for use in PJD reverse osmosis water filtration equipment, we make no representation as to whether using these water filters and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to PJD under counter drinking water system equipment.

 

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