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How to Connect 1/2” PEX to 3/8” Tubing?

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Old 01-27-19, 12:43 PM
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How to Connect 1/2” PEX to 3/8” Tubing?

I am trying to hookup my reverse osmosis filter to the refrigerator line. The line out of the RO uses 3/8” OD tubing and the refrigerator has 1/2” PEX (1/2” CTS).

I’m going crazy trying to find some sort of reducing union for this. Any ideas?
 
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Old 01-27-19, 01:42 PM
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How about an angle stop? There are 1/2" PEX x 3/8" tube angle stops available. A sharkbite angle stop would be very easy.

https://www.sharkbite.com/products/b...h-supply-stops
 
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Old 01-27-19, 01:49 PM
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Good find! The only issue I (potentially) see with that is that it’s brass. From what I’ve read, the recommendation for RO water is generally poly/plastic - since the water has all minerals/chemicals removed from it, there is a natural attraction for it to start to break down the brass...or something scientific like that. 😜
 
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Old 01-27-19, 08:35 PM
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How far is the RO from the fridge? A water line to a fridge is typically 3/8".
 
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Old 01-28-19, 07:32 AM
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The RO is being installed in the basement, and then it is about a 25' run to the fridge. The outlet on the RO is 3/8" OD tubing, which will run into a delivery/demand pump (also 3/8" OD) to maintain water pressure. From there, it needs to connect to the 1/2" PEX line that runs to the ice maker outlet box behind the fridge.
 
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