How to extend short CPVC stubs?

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Old 06-26-13, 11:18 AM
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How to extend short CPVC stubs?

Hi,

I'd like to switch out the cheap stop valves under our sinks and toilets for 1/4-turn ball valves. The stop valves are attached to CPVC stubs, and I already have replacement valves that glue directly to CPVC. The problem is that some of the stubs are quite short. I'll probably be able to cut off the existing valves and glue the new ones on, but if there is a problem down the road, there wouldn't be much room to make changes anymore.

I could attach a union and a piece of CPVC to give me more pipe to work with. Or I could glue a CPVC-to-MIP transition, screw on a FIP-to-CPVC transition, and then my stop valves, but that sounds a bit contrived.

Any other options/ideas?

Many thanks in advance.
 
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Old 06-26-13, 12:19 PM
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If it is like 80% of the punches I have done, the bathroom and kitchen sink supplies that are CPVC are not fastened very well to the framing of the house. This makes for a weak pipe. Can you pull the stop valve out into the room at all? If so, you may be able to pull it enough to hold it with pliers until you can glue on the new one. That, or use a sharkbite stop valve.
 
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