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Photo 27: Here is one of two types of feed water connectors I provide with my RO units, a faucet connector. This particular one is made of brass for durabliltity and uses a John Guest connector for the feed hose. For the reef aquarists who are concerned with copper leaching from the brass, the amount is so miniscule that even if the membrane was not being used, there would be no danger to delicate invertebrates.
The connector is 3/4" garden hose thread (commonly used in utility sinks) and may require an adapter for kitchen or bathroom faucets.
Photo 28: Here it is again, attached to the inlet hose and port of the first stage prefilter. A short hose is used for the photo. On the real unit it would be much longer.
Photo 29: Here is the other type I provide, a self-piercing valve. It has the only non-push in fitting on the unit. This feed valve is only used on copper or steel pipe (steel pipe requires drilling) where there is no faucet or one is not convienient, such as an under counter installation. Notice the sharp needlelike projection under the valve body. This is what pierces the pipe.
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