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Old 11-03-2015, 07:28 PM   #1
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Is this valve installed correctly?


Question for any professional plumbing tradesman lurking out there on this forum that is familiar with bronze fittings and can clarify a question regarding the installation of this particular check valve;

This following is a picture of a KITZ Class 125 Y Pattern Swing Check Valve my plumber has installed in my hot water system. The water flow through the valve is going down, not up. I am having my doubts it is installed correctly but my plumber says it is.

Question: Does the positioning of this valve in this position and direction allow it to work properly?
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Is this valve installed correctly?-check-valve-copy.jpg  
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Old 11-03-2015, 08:23 PM   #2
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Doesn't seem right and it looks like the manufacturer agrees. Basically the way that is it is swung open all the time and gravity will tend to want to keep it that way. If the fluid was flowing up then it would be ok. Here is a link to the site and a quote from the bottom about how it works. https://www.kitz.co.jp/english2/type_checkvalve.html
♦Swing Check Valve
A hinged disc assembly is suspended from the body to allow it to move freely. This configuration minimizes pressure loss and eases fluid flow. Swing check valves can be used for either horizontal or vertical (fluid flowing upward) pipe layouts.
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Old 11-03-2015, 08:27 PM   #3
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The gate will be swinging open. It will not function likely. That valve should be installed horizontal not vertical.
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Old 11-03-2015, 08:32 PM   #4
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According to this link it is to be installed horizontal.

http://oslandpiping.com/kitzvalves/k...stechdata.html
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Old 11-03-2015, 08:58 PM   #5
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Yes, these are all the same thoughts I had. Thanks for the links to the proper installation instructions.

Will be having a bit of a chat with my plumber.
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