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.

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PuroTwist PT3000 Water Filters

PuroTwist PT3000 Water Filters

PuroTwist ® PT3000 Reverse Osmosis System Replacement Water Filters, Reverse Osmosis RO Membranes, DIY Replacement Parts and HELP Guides.

Puro Twist ® Reverse Osmosis System, PuroTwist ® Q Series & RO/Conn ® Replacement Water Filters And Reverse Osmosis RO Membranes

If you have the PuroTwist Q-5605-60, Q-5633-60 or the Q-5640-60 you have a different thread pattern than the ones with the standard thread pattern listed below. This is designated by the "-60" at the end of the model number. For more on the PuroTwist "-60" see ® Rayne Q-5605-60, Q-5633-60 or the Q-5640-60

  1. Omnipure Q5633- Carbon Replacement Prefilter and Post Water Filter-1000
    Omnipure ® Q5633 Carbon Pre/Post Water Filter
    Omnipure ® Q5633 Carbon Replacement Prefilter and Post Water Filter. "Q" Series Quick Connect Sanitary Change. Granular Activated Carbon - T33 GAC Filtration.
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    $27.99 Special Price $18.99 As low as $14.99
  2. Omnipure Q5621- Carbon Replacement Pre-filter and Post-Water Filter- 1000
    Omnipure ® Q5621 Carbon Pre/Post Water Filter
    Omnipure ® Q5621 Carbon Block Pre/Post Water Filter. 10 Micron. Upgrade To Carbon Block From Standard GAC Carbon. No "Carbon Fines" Released.
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    $36.99 Special Price $25.99 As low as $21.99
  3. Omnipure Q5615 - carbon 1 micron replacement prefilter or post water filter- 1000
    Omnipure ® Q5615 carbon 1 micron replacement prefilter or post water filter
    Omnipure ® Q5615 Carbon Block Replacement Prefilter and Post Water Filter. 1 Micron with lead removal. Upgrade To Carbon Block From Standard GAC Carbon. No "Carbon Fines" Released.
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    $39.99 Special Price $29.99 As low as $25.99
  4. Omnipure Q5686 Carbon Phosphate Replacement Water Filter For Scale Control-1000
    Omnipure ® Q5686 Carbon Phosphate Replacement Water Filter For Scale Control
    Omnipure ® Q5686 Carbon Phosphate Replacement Water Filter For Scale Control. Omnipure "Q" Series Quick Connect For Sanitary Filter Changes. GAC Granular Activated Carbon With Phosphate.
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    $32.99 Special Price $22.99 As low as $18.99
  5. Omnipure ® TQ56-15FC 15 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-15FC 15 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-15FC 15 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control. Omnipure Q Series Sanitary Quick Change Replacement RO Reverse Osmosis Membrane.
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    $89.99 Special Price $69.99 As low as $58.99
  6. Omnipure ® TQ56-36FC 36 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-36FC 36 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-36FC 36 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control. Omnipure Q Series Sanitary Quick Change Replacement RO Reverse Osmosis Membrane.
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    $115.00 Special Price $84.99 As low as $73.99
  7. Omnipure ® TQ56-50FC 50 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-50FC 50 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control
    Omnipure ® TQ56-50FC 50 GPD TFC RO Reverse Osmosis Membrane With Built-In Flow Control. Omnipure Q Series Sanitary Quick Change Replacement RO Reverse Osmosis Membrane.
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    $125.00 Special Price $89.99 As low as $77.99
  8. Omnipure Water Filter Head Replacement #NVH1/4 (#VH1/4)
    Omnipure Water Filter Head Replacement #NVH1/4 (#VH1/4)
    Omnipure Water Filter Head Replacement. Non Valve and Valve In Head. 1/4" FNPT ports for easy installation of fittings. #NVH1/4 (#VH1/4) Add Bracket #Q-BRACKET for best installation.
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    $24.99 Special Price $11.99 As low as $10.39
  9. 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
  10. Omnipure Q Series Q53XE Sanitizing Housing
    Omnipure Q Series Q53XE Sanitizing Housing

    Omnipure Q Series Q53XE Sanitizing Housing.  6" empty Q Series quick change filter cartridge used for sanitizing Omnipure, PuroTwist and converted DuPure reverse osmosis and under counter drinking water filtration systems.

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    $9.95
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19.  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
  20. 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
  21. 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
  22. 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
  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
  24. 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
  25. 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
  26. Teflon-Tape-100-1000
    Teflon Plumbing Tape To Seal Threaded Water Connectors
    PTFE thread sealant tape permits quick, clean, economical sealing of male pipe threads of all sizes. Reduces the risk of system contamination common with liquid and paste sealants. A must use on all male threads used in reverse osmosis and pure drinking water filtration systems.
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    $5.99 Special Price $3.39 As low as $2.75
  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
  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
  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
  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
  31. 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
  32. PuroTwist ® 4000 Reverse Osmosis RO System - Free Shipping *
    PuroTwist ® 4000 Reverse Osmosis RO System - Free Shipping *
    PuroTwist ® 4000 Reverse Osmosis System - 4 Stage RO Reverse Osmosis Pure Water Drinking System. 50 Gallon Per Day TFC Reverse Osmosis Membrane (Valve in head for easy filter changes) 50 GPD TFC Reverse Osmosis Membrane, Uses Easy Change Replacement Filters. Includes Storage Tank, Long Reach California Prop. 65 lead safe faucet, Filters & Installation Kit.. Simple system to maintain. PT4000-T50-SSNA. Dimensions: Filter and Head 19" high, 12" wide, 4 1/2" deep. Tank 14" high, 10" diameter.
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    $369.99 Special Price $279.99 As low as $239.99

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.





* PuroTwist ® is the registered trademark of PuroTwist, the manufacturer of PuroTwist ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by PuroTwist.  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in PuroTwist ® AQPC-35 brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to PuroTwist ® equipment.