Side Pipe on Line to Kitchen Faucet

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Old 11-16-09, 04:36 PM
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Question Side Pipe on Line to Kitchen Faucet

I was thinking about replacing the old piping from my main lines to the kitchen sink faucet to see if I can get an increase in water pressure. They are very old galvanized pipes and no doubt corroded and narrowed with rust. It would only take a few feet of piping and a few elbows for me to do this.

I was looking under the sink and and I noticed that coming off of the pipe that I recently installed new shutoff valves on there is an elbow and a piece of pipe (about 8" high with a cap on the end.) What is the purpose of this pipe and if I do replace the piping do I need to put this piece of piping?

Thanks in advance for any help anyone can give me on this one!!
 
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Old 11-16-09, 07:49 PM
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It's probably an air chamber, although it may be a capped off line that once fed a dishwasher or water filter.

Air chambers are installed to mitigate water hammer. In my opinion they just fill up with water after a while, but they may be required by your local codes, so look into that before proceeding.
 
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