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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 clear water filter housings are made of a plastic material called Styrene-Acrylonitrile which provides a safe operating range up to about 90psi.
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.
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!
Membrane housings are relatively standard across the industry, and the only wearable parts are the o-rings that seal the housing. If the o-rings are kept lubricated with proper lubricant, they will last years without any problems. However over time the o-rings will go bad and with slight variations, over time of the dimensions and placement of the o-rings, we highly suggest 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.
Cheap, Tough To Plumb By Patrick on 6/9/2017Patrick would recommend this product to a friendDoes what it says on the tin. I had some problems plumbing the unit with the 1/8NPT x 1/4" quick connect fittings BRS sells. When screwing in the product and waste water connectors, there's very little clearance. The valves scrape each other when tightening them up, and it's really difficult to get them to turn around one another.
Cheap, and good quality, just difficult to screw in fittings.
Eased installation By James on 4/9/2016James would recommend this product to a friendI have concocted a staged 2X100GPD RO system and the consistent size of the two membrane housing units facilitated that assembly. The clamps hold each unit to the basic frame securely and yet provide the flexibility to move the membrane housings forward and back to allow the plumbing to go forward. The quality of the hosing was easily discerned and the machining of the FMPT orifices was evident.
just as pictured By Ryan on 1/5/2016Ryan would recommend this product to a friendThis is a great product that came just as pictued. The price is right.
Just fine By Evrard on 10/13/2015Evrard would recommend this product to a friendBeefy houseing w/ gaskets and ready for fittings and a membrane.
A bit more info would be nice By flyboy on 10/12/2015flyboy would recommend this product to a friendAs another person mentioned, since this requires additional plumbing, it would be nice if in big bold letters, it indicated this & the fitting size required!
Well worth the money By bronx101abn on 8/1/2015bronx101abn would recommend this product to a friendThe cheapest price that I found online.
If you understand how a R/O works you know more of these equals faster clean water I can now make 300 gpd easy and it comes ready for any fitting you choose By Barrier Reef on 12/28/2014Barrier Reef would recommend this product to a friendIf you understand how a R/O works you know more of these equals faster clean water I can now make 300 gpd easy and it comes ready for any fitting you choose
Buy the Kit By 915mang on 5/8/2014915mang would recommend this product to a friendBuy the kit, I didn't realize that they sell the kit that come with everything. Upgraded to this so I could make more RODI.
its what i need By gunda on 9/6/2013gunda would recommend this product to a friendlike it described in description. its standard ro housing which fit exactly the way it supposed to and worked fine with my dow filmtec 75gpd membrane. good product with awesome price.
Not 1/4" female By Josh on 2/21/2013Josh would recommend this product to a friendI assumed this would have standard 1/4" female threads. I was wrong. Might be worth mentioning that in the description, or including the proper fittings like you do with your other canisters.
Nice housing By Jeremy on 2/18/2013Jeremy would recommend this product to a friendFits all standard membranes, feels pretty well made, you will need to purchase the fittings to hook it up if you don't already have.
Great Price! By Mindy on 8/3/2011Mindy would recommend this product to a friendFits our RO/DI system perfectly, and the standard membrane went in without a problem. Great value!