JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
Low Prices and Fast Shipping
Since 1999
Replacement water faucets, accumulator holding water tanks, water filter cartridges, pre filters, post filters, sediment filters, carbon block filters, GAC filters, RO membranes, O-rings, Filter Housing Spanner Wrenches, Valves, Water Pumps and reverse osmosis drinking water system replacement parts. Be sure to have a TDS tester to check the performance of your RO Reverse Osmosis membrane as listed below.CUNO Water Factory 4000-CTA 3 Stage CTA Reverse Osmosis System• Previously used for city supplied water as they are chlorine tolerant. CTA (cellulose triacetate) membranes have been being replaced by newer technology TFC (thin film composite) membranes. TFC RO Membranes cannot be exposed to chlorine as it will destroy the membrane and therefore they use a carbon prefilter to remove the chlorine prior to reaching the membrane. While we do offer replacement CTA membranes we recommend that you update your system to a current TFC membrane.
CUNO Water Factory 4000 CTA Reverse Osmosis Drinking Water System Owner's Manual
NOTE-Membrane housing must be replaced. OEM housing will not open to accept a new RO membrane. You will also need to order the matching flow restrictor and check valve below. Remove and discard the old red SFC "Stealth Flow Control" from the drain line and replace with new tubing)
Flow Restrictor - capillary - 500 ml 1/4" quick connect fittings.
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.
4 Gallon Reverse Osmosis Tank GGN-Tank-4 Pro 3.2
Water Filter System Parts Department. Find replacement filters, reverse osmosis membranes and repair parts in stock for prompt shipping. Water Filter System Parts For Your 3M, Aqua-Pure, CUNO or Water Factory Reverse Osmosis Systems, Under Sink Water Filters and Whole House Water Filtration. Low prices and fast shipping online since 1999.
Water Testing, TDS Meters and Water Test Supplies. Large selection, low prices and fast shipping online since 1999.
Replacement Faucets for 3M, CUNO, Aqua-Pure and Water Factory RO Reverse Osmosis and Under Sink Pure Drinking Water Filter Systems. Huge selection of styles and finishes in stock. Low prices and fast shipping online since 1999.
Chiller Daddy Under Sink Water Chillers - Enjoy chilled water from your Aqua-Pure, CUNO, Water Factory or 3M RO Reverse Osmosis or drinking water filtration system. Perfectly chilled water at your tap. Large selection, low prices and fast shipping since 1999.
Water Factory, 3M, CUNO and AquaPure replacement water treatment equipment supplies. Huge inventory of replacement parts, water filters and reverse osmosis membranes. Low prices and fast shipping since 1999.
Learn How To Upgrade The GPD Capacity of Your Reverse Osmosis Membrane. Easy instructions with our online guide. Low prices and fast shipping since 1999.
How To Check Tube & Fitting Size. Be sure to check and order the correct size needed for your system. Online service and trouble shooting guide for reverse osmosis drinking water systems. Low prices and fast shipping online since 1999. Millions sold.
John Guest Poly Tube for RO Reverse Osmosis and Water Filter Pure Drinking Water Filtration Systems. Large John Guest tubing inventory, low prices and fast shipping since 1999.
Easy TDS Membrane Performence CalculatorSee If It is Time To Replace Your MembraneFeed Water TDS RO Water TDS SubmitSimply 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
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
