Advice appreciated


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Old 08-17-21, 10:40 AM
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Advice appreciated

Hello, I wanted to get some opinions on how to proceed with my small project.
I have a gate valve that when shut won't stop the flow at the spigot outside. So I'd like to replace it with a ball valve. It has PVC glued into copper reducers then soldered to the valve. I was wondering what everyone's thought are on how to replace the valve. Just break the solder at the valve and replace or go the route of cutting the PVC. I have done both in the past, but I never worked on PVC and copper together. I am not sure if heating the solder connection will mess with the PVC being so close. (see pic) Thanks in advance for the replies. Take care,

 
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Old 08-17-21, 10:52 AM
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I think you will have to cut the PVC. Those fittings were likely sweated onto the valve before attaching to the PVC. The heat to melt the solder stands a good chance of damaging the PVC so I wouldn't touch it with a torch. If you have PEX tools I would convert to PEX at the T from the supply pipe on the left and run everything in PEX and avoid all those elbow fittings.
 
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Old 08-17-21, 12:19 PM
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Transition from cpvc to pex with a Sharkbite coupler push fitting.
 
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Old 08-17-21, 12:55 PM
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Wow, I am surprised that that is even functional, those adaptors are for soldering to copper pipe, not gluing to PVC.

I love it when I see something new and unexpected.

Yes you need to replace with a PVC ball valve, but the problem you have is there is nothing to attach the valve to on the bottom once the copper adaptor is removed.

Not a big deal, you will need to cut out the "t" in the main line and rebuild it with elbow and pipe to valve, the top side once the copper adaptor is removed is sufficient.
 
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Old 08-19-21, 02:57 PM
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Thank everyone for the replies. I do have a question. I thought PVC ball valves were more for lower pressure water system, like a pool. It it ok to use them on higher pressure like this house water line?
 
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Old 08-19-21, 07:43 PM
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A residential line wouldn't be considered a "higher pressure" line. It usually tops out around 60ish and sometimes a bit higher but it's not allowed to be any higher than 80. I've yet to see a system that high in pressure.

The readily available ball valves are not only rated for those pressures, they are fantastic at being the least restrictive possible, as opposed to the gate valve which impedes flow.

Go ball valve and enjoy the added throughput!
 
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Old 08-20-21, 07:45 AM
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Hi msh1212

That piping is CPVC not PVC at least the FLOWGUARD pipe is CPVC and I assume the other pipe in the picture is the same. And that makes sense since PVC is not allowed for water distribution inside the house but CPVC is. But they do make CPVC ball valves. See link for example and note this one is rated for 150 psi.

https://www.homedepot.com/p/LEGEND-V...E&gclsrc=aw.ds
 
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Old 08-20-21, 11:09 AM
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It's good that you found this and are replacing it. I can't imagine that the copper/cpvc glue joint is going to last, seems like different expansion and contraction would eventually break the glue to copper seal.
 
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Old 08-21-21, 01:43 PM
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Thanks everyone. I will be replacing it with the CPVC valve above soon. Appreciate it.
 
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Old 08-21-21, 06:13 PM
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That looks like a globe valve to me, not a gate valve. Have you tried to just replace the washer in the valve?
 
 

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