Standard RO Membrane Housing
These standard RO membrane housings are long-lasting and offer wide membrane compatibility. Membrane housings are relatively standard across the industry, and these housings will fit standard 10" RO membranes, such as the popular Dow Filmtec 75 GPD membranes. Made with high-quality components and o-rings, they are the perfect option for building your RO/DI system or replacing a worn-out membrane housing.
For the most part, the only wearable parts are the o-rings that seal the housing. If the o-rings are kept properly lubricated, they will often last years without any problems. However, over time the o-rings can wear out or deform, and with slight variations in tolerances of o-rings and housings over time, it's often easier purchasing an entire new housing.
Most common fittings used -
Source water input: 1/8" MNPT x 1/4" Push Connect
Waste water output: 1/8" MNPT x 1/4" Push Connect
Product water output: 1/8" MNPT x 1/4" Push Connect Check Valve
Note: Housing has 1/8" Female NPT Fittings. We highly recommend the use of a push connect elbow check valve on the product water line if you are going to use an auto shut off valve on your RODI system. The use of a non-check push connect elbow is totally fine, as inline check valves can be added at any time.
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The clear water filter housings are made of a plastic material called Styrene-Acrylonitrile which provides a safe operating range up to about 90psi.
You certainly can add a second water saver membrane onto the system. Keep in mind that the membranes will need to be the same size. For example if you have a 50 gpd membrane your second will also need to be the same size due to the flow restrictor. If you change your current membrane to a 75GPD you can simply change the flow restrictor to one which is closer to 550 mL per minute. Feel free to let us know if you have any further questions!
The membrane housing is a standard membrane housing which utlize 1/8" female npt fittings. The most common fittings to use in them would be 1/8" male NPT fittings x 1/4" push connect like the one found at the link below
The threaded fittings on the cap (and other end) are 1/8" NPT, so to use them one would generally use a 1/8" NPT x 1/4" push connect.