using unions in shower valve plumbing, yes or no?
I am redoing a small bathroom, and I've finished the demolition down to the studs and joists. I'm getting ready to rough in the new supply lines to the toliet and sink, but I have questions about plumbing the shower. The new shower valve I got is pressure-balancing and temperature balancing - it's heat sensitive and the inlets are 1/2" female npt.
Although there's an access panel, I'd rather not use any unions in plumbing this in and sweat as many connections as I can. If I can avoid taking it apart I'd rather, but if it comes to it I guess I would to avoid heat damage.
Can anyone comment on using unions in general? They seem easier for a diy installation - which this is - but they just seem like they're more prone to possible leaks. Right now I'm consigned to measure everything out and dry-fit everything, then sweat joints as far from the valves before either tightening the threaded connections or disassembling valves and sweating those.
Would anyone advice sweating a threaded connection? I would prefer not to because it seems that would make disassembly a real bear, but I'm curious.
Thanks for the advice on working with threaded fittings
I bought a Pegasus tub and shower mixing valve and was/am figuring how I was going to install it. I cut the old value out and did a bit of experimenting on it with my torch and solder before I trashed it for good. I was unable to remove the threaded fittings. They appeared to have been soldered after they were assembled.
I've seen similar fitting that were teflon taped and seemed to work fine so that is how I intend to assemble this.
I did have a question...can anyone tell me if there is a standard height for this type of control. I'd imagine that there isn't only because I've seen so much variation in the placement of the controls