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Just call me Andrew
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Discussion Starter · #1 ·
I have a double check valve assembly for my sprinkler system, installed by a plumber. I am planning to do all the work after the DCVA myself, in PVC. THe DVCA has a female 1" threaded copper connection on the outlet.

How do I go from that to PVC? Can I screw in a PVC adapter right into the copper (the adapter would be male 1" threaded to female 1" slip).

Thanks.
 

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Using a male adapter should be fine. I have seen problems with female PVC adapters, and some areas do not allow them. They have a habit of leaking and cracking.
 

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Just call me Andrew
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Discussion Starter · #4 ·
You mean male on the PVC adapter end, right?

Like...if situation were reversed and the DCVA had a male threaded end, you'd have me convert male to female with copper, then screw in male PVC threaded?
 

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YUP. PVC female adapters are easily over-tightened and crack fast. I hand tightened one and had a leak. When I removed it, crack was apparent and I did not force it by hand.
 

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If both lines are PVC, they should be glued. Female PVC adapters are a problem. If you want to take the chance of a leak, use the female adapter.
 

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Just call me Andrew
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2,279 Posts
Discussion Starter · #8 ·
OK, got it.

What about PVC unions. They OK? I want to put them after each of my valves so I can disconnect them and take them inside (along with the whole manifold) for the winter.
 
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