Replacement water filters, RO reverse osmosis membranes and whole house filter systems. Refrigerator water filters, pool and spa filter. Pentek, OMNIFILTER water filters. Chiller Daddy water chillers
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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Choose any one of the three listed below. The flow control is built right into the housing that encapsulates the membrane, so order any size of membrane GPD you wish. This is a great time to upgrade your system's capacity. You will need to order the membrane conversion kit only the first time you change the membrane.
This system uses 1/4" tube and 1/4" MNPT John Guest quick connectors. The ports are 1/4" FNPT. See how to use the John Guest quick connectors on this system and replacement membrane.
Pentair GRO-36EN W/DLFC 36 GPD Encapsulated Membrane with 100 ml Flow Control.
Pentair GRO-50EN W/DLFC 50 GPD Encapsulated Reverse Osmosis Membrane with 150 ml Flow Control.
Pentair GRO-75EN W/DLFC 75 GPD Encapsulated Reverse Osmosis Membrane with 200 ml Flow Control.
John Guest ® Poly Tubing 1/4" For Pure Drinking Filter Water Systems
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.