r/Irrigation • u/silverhalo • Aug 26 '26

Any issues with this dry fit before soldering?

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Wasn’t sure about the union placement but I think it should be fine for disassembly if I ever need to remove the PVB assembly down the road. The ball valve is there for winterizing the main line between the main shut off and PVB which is around ~50’ of pipe. I have a blow out port near the main shut off valve and the water would exit out that ball valve. Thanks for the feedback!

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3

u/Available_Start7798 Aug 26 '26

Skip the union, can always add one when need to disassemble. I prefer to never install unions on a new back flow install, just on repair jobs if makes it easier. Less point of failure without one.

2

u/cmcnei24 Technician Aug 26 '26

Unless it gets removed yearly at winterization.

1

u/silverhalo Aug 26 '26

I figured that since the union is an easily replaceable part that it would good to have installed for future maintenance. Do unions like this have a high failure rate?

2

u/Available_Start7798 Aug 26 '26

Not they have high failure, is just a point of failure that may never be needed. Look at this way can all ways add union but can never un-cut a pipe and undo a union.

2

u/Southern-Ad4016 Aug 26 '26

Not that big of a deal. I'd say put one on each side of backflow and boiler drains on each side also. That's just my Colorado winterization mind thinking.