Rotek Water Filters ®
Rotek ® Compatible Replacement Water Filters, RO Membranes, DIY Service Parts and HELP Guides For Under Counter Reverse Osmosis RO Pure Drinking Water Systems
STAGE 1 (vertical) -
- Replace Every 3-6 Months
STAGE 2 (vertical) - - Replace Every 12 Months
STAGE 3 (vertical) - - Replace Every 12 Months
STAGE 4 (horizontal) - Reverse Osmosis Membrane: Choose a membrane and matching below. Replace when indicated by
STAGE 5 (horizontal) - - Replace Every 12 Months
- Four Stage Standard RO Reverse Osmosis Water Filter Change KitLearn More
Four Stage Standard RO Reverse Osmosis Replacement Water Filter Change Kit. (2) 5 micron sediment Pre Filters, (1) 10 micron Carbon Block Filter and (1) Inline GAC Post Filter. RO reverse osmosis membranes sold separately.
- Five Stage Standard RO Reverse Osmosis Water Filter Change KitLearn More
Five Stage Standard RO Reverse Osmosis Water Filter Change Kit. Includes (2) 5 micron sediment Pre Filters, (2) 10 micron Carbon Block Cartridges and (1) Inline GAC Post Filter. RO Reverse Osmossi Membranes sold separately.
- GE Osmonics ® Purtrex PX-5-978 Sediment Replacement Water Filter # 93023Learn More
GE Osmonics ® Purtrex PX-5-978 Sediment Replacement Water Filter # 93023 9 7/8" 5 micron. High capacity.
- GGN-10-2-Block Premium Quality Carbon Block Replacement Water Filter10 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-BLOCKLearn More
- Omnipure ® CL-10RO-T/33 GAC Inline Replacement Water FilterLearn More
Omnipure ® CL-10RO-T/33 inline GAC carbon water filter replacement cartridge. 1/4" (-B) or 3/8" (-C) FNPT (Female National Pipe Thread) connections. Replacement Jaco connectors and John Guest Speedfit connectors available separately for 1/4" or 3/8" tube. 25 per case, priced and sold individually. Order a case and save even more.
- Dow Filmtec ® TW30-1812-24 RO # 93430 reverse osmosis membraneDow Filmtec ® TFC 24 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" # 93430Learn More
- Dow Filmtec ® TW30-1812-36 # 80719 RO reverse osmosis membraneDow Filmtec ® TW30-1812-36 TFC 36 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80719Learn More
- Dow Filmtec ® TW30-1812-50 RO reverse osmosis membrane # 80722Dow Filmtec ® TW30-1812-50 TFC 50 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80722Learn More
- Dow Filmtec ® TW30-1812-75 (BW60-1812-75) #114731 RO reverse osmosis membraneDow Filmtec ® TW30-1812-75 (BW60-1812-75) TFC 75 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate. #114731Learn More
- Dow Filmtec ® TW30-1812-100 HR RO reverse osmosis membrane 170102Dow Filmtec ® TFC 100 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate.Learn More
- Inline RO reverse osmosis membrane flow restrictorLearn More
Premium inline reverse osmosis membrane flow restrictor - Keep your system operating correctly by replacing worn flow restrictors. Reverse Osmosis systems use pressure differencials to power the reverse osmosis process. A worn flow restrictor will alter the proper balance. Our in-line capillary flow restrictors are very simple to install.
- Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner WrenchPentek 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. 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. Place the handles of two wrenches pointing in opposite directions and it will apply force evenly. Our techs know the tricks.Learn More
- Pentek # 151121 O-Ring Replacement For Slim Line Water Filter HousingsLearn More
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.
- 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?Learn More
- Pro Products Sani System Water Filtration System SanitizerSani-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..Learn More
- Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-PLearn More
Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-P. The perfect replacement faucet for under sink reverse osmosis systems. Works as air gap or non air gap. Push handle allows you to lock it in open position for filling pitchers or cooking pots. Attractive design.
- Puroflo FLR-868 Chrome Non-Air Gap FaucetPuroflo 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 LevelLearn More
- Stainless Steel Designer Faucet for RO Reverse Osmosis & Drinking Water Filtration SystemsStainless 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".Learn More
- 4 Gallon Reverse Osmosis Water Tank Replacement - GGN-Tank-4-Pro 3.2Learn More
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.
- 4 Gallon Water Tank for RO Reverse Osmisis Drinking Water Systems - GGN-Tank-PL44 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 #850901003514Learn More
- SS Stainless Steel Reverse Osmosis Storage Tank - Premium QualityLearn More
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.
- Air pressure gauge for reverse osmosis water accumulator tanksAir 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.Learn More
- Inversion Tank Stand Reverse Osmosis SystemLearn More
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.
- Multi Mineral Filter - Inline 10 Far Infrared Mineralized Balls, Aluminite, GAC Granular Activated Carbon, Plus 4 Stages of Suspended Particulate Pre FiltrationLearn More
Multi Filter - Inline 10" - Mineral, Aluminite, Far Infrared Mineralized Balls, GAC Granular Activated Carbon, Plus 4 Stages of Suspended Particlutate Pre Filtration. This mineral filter is the perfect filter to add on to your RO Reverse Osmosis drinking water system. Easily attaches inline between the faucet and RO system. MAKE YOUR OWN MINERAL WATER
- TDS Meter Inline Water Tester DM1 - HM Digital Dual Mode Reading - Easily Installs Inline - Very Simple To UseTDS Water Meter - HM Digital DM1 - 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. 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. Dual Range 0-9990 ppm. Always know if your RO membrane is performing correctly!Learn More
- TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS MeterTDS 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 RemovedLearn More
- Standard Size RO Reverse Osmosis Membrane HousingStandard size RO reverse osmosis membrane housing - 90° Ports with 1/8" FNPT Threads - Includes New O-rings and 3 90° 1/4" Jaco Fittings For 1/4" Tube, or upgrade to the John Guest Quick Connectors. The end with a single port is the inlet feed water. On the end with two ports the center port is the permeate (product) water. The offset port is the brine (waste).Learn More
- Automatic Shut Off Valve for reverse osmosis RO system - ASO ASVLearn More
Auto Shut Off RO 1 - Automatic shutoff valve for reverse osmosis systems. ASO ASV Easy to use 1/4" OD Tube Jaco connectors included. The valve automatically shuts off production when the tank pressure reaches approximately 65% of the incoming line pressure.
- Filtamate 85 PSI APEX Inline Water Pressure Regulator With 1/4" Quick ConnectionsAPEX Filtamate 85 PSI Inline Pressure Regulator. 1/4" Quick Connectors. Great inline pressure regulator to prevent excessive pressure from reaching your RO Reverse Osmosis system or other sensitive water equipment. Helps prevent water spikes, or surges, that can lead to system failure or leaks.Learn More
- Inline Check Valve - Back Flow Prevention - John Guest Speedfit Quick Connection 1/4SCV and 3/8SCVInline Check Valve - Back Flow Prevention - Check Valve- 1/4" quick connect - one way flow, Easy to install. 1/4SCV and 3/8SCV.Learn More
- Inline Water Shut Off Valve - Great For Refrigerators And Ice MachinesLearn More
Inline Water Shut Off Valve - Great For Refrigerators, Ice Machines, reverse osmosis systems and under counter drinking water systems. Built in quick connectors. Very easy to install and use.
- John Guest ® Poly Tubing 1/4" For Pure Drinking Filter Water SystemsLearn More
John Guest ® Poly Tubing 1/4" For Pure Drinking Filter Water Systems
- John Guest ® Tube Cutter - TSNIPJohn Guest ® tube cutter TSNIP - Great for making a perfect cut everytime. Helps prevent leaks by making a square end cut ensuring proper fit and seal in water connecttion fittings. A real must for any professional or discerning home owner.Learn More
- John Guest ® Super Speedfit Quick Connector - Male - ElbowJohn 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 , PI481223SLearn More
- Jaco ® Elbow Connector Fitting for Drinking Water Systems - 90 degree - Sold As a PairJaco ® Elbow Connector Fitting - 90 Degree - Sold as a Pair. Tube x MNPT Thread Sizes.Learn More
- John Guest ® Tee Connector For Water Systems - Quick ConnectorsJohn 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.Learn More
- Teflon Plumbing Tape To Seal Threaded Water ConnectorsPTFE 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.Learn More
- Easy Tap Water Feed Valve For Water Filter Systems 3/8"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.Learn More
- Chiller Daddy CHL-750XL Under Sink Water Chiller - 110 VoltLearn More
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.
- UV-SS2 1 Gallon per Minute UV Ultraviolet Water SterilizerLearn More
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.
- Leak Detector SAS-414 - Water Sensor and Shut Off ValveLearn More
Leak Detector SAS-414 - Water Sensor and Shut Off Valve
- 3M 6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit6 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.Learn More
- 4 Stage Reverse Osmosis RO Pure Drinking Water SystemLearn More
4 Stage Reverse Osmosis RO Pure Water System With Auto Shut Off Valve
50 Gallon Per Day Filmtec TFC Reverse Osmosis Membrane (Higher capacity and faster recovery time) 50 GPD FILMTEC TFC Reverse Osmosis Membrane, KX Carbon Block & Osmonics Sediment Pre Filter, Omnipure GAC Post Filter. Uses Standard Size Replacement Filters. Includes New 4 Gallon Storage Tank (14 " high X 11 " diameter) , Long Reach CA Lead Safe Faucet & Installation Kit. System measures: 17" High X 14" Wide X 6" Deep
- 5 Stage Reverse Osmosis RO Pure Drinking Water System5 Stage Reverse Osmosis RO Pure Water System With Auto Shut Off Valve - 50 Gallon Per Day Filmtec TFC Reverse Osmosis Membrane (Higher capacity and faster recovery time) 50 GPD FILMTEC TFC Reverse Osmosis Membrane, KX Carbon Block & Osmonics Sediment Pre Filter, Omnipure GAC Post Filter. Uses Standard Size Replacement Filters Includes New 4 Gallon Storage Tank (14" high X 11"diameter) , Long Reach CA Lead Safe Faucet & Installation Kit. System measures: 17" High X 17" Wide X 6" DeepLearn More
- Sale5 Stage With Pump Reverse Osmosis RO Pure Drinking Water System5 Stage Reverse Osmosis RO Pure Water System With Auto Shut Off Valve - 50 Gallon Per Day Filmtec TFC Reverse Osmosis Membrane (Higher capacity and faster recovery time) 50 GPD FILMTEC TFC Reverse Osmosis Membrane, KX Carbon Block & Osmonics Sediment Pre Filter, Omnipure GAC Post Filter. Uses Standard Size Replacement Filters Includes New 4 Gallon Storage Tank (14" high X 11"diameter) , Long Reach CA Lead Safe Faucet & Installation Kit. System measures: 17" High X 17" Wide X 6" DeepLearn More
UV Ultraviolet Disinfection and Sterilizing Lamps Kills Viruses. Disinfect and sterilize your drinking water for safe water from your RO reverse osmosis, DI or ultra filtration system. Large UV Ultraviolet lamp inventory, low prices and fast shipping online since 1999.More
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
* Rotek is the registered trademark of Rotek, the manufacturer of Rotek brand of under counter drinking water system filtration equipment. The replacement water filter cartridges, reverse osmosis membranes, water tanks, faucets and repair parts listed above are not manufactured or endorsed by Rotek. Rather, these replacement filters, RO reverse osmosis membranes and DIY replacement parts are manufactured by other companies. While these replacement water filters, repair parts and reverse osmosis membranes are compatible for use in Rotek under counter reverse osmosis water filtration equipment, we make no representation as to whether using these water filter cartridges and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to Rotek under sink drinking water system equipment.