If you are trying to install a screw-on tub spout, it might not tighten up, because the SharkBite adapter will spin. You would need to use a wrench to tighten the SharkBite side, and that would be hard to do inside the spout.
Some spout basics:
Diverter vs tub only
- Diverter spout models have a pull up knob that blocks the water flow, causing it to reverse and come out the shower head.
- Tub only are just simple spouts, filling the tub.
Spout connection types There are three main types of how a spout connects to the pipe
1 Front threaded. The pipe traverses the length of the spout internally, ending in a threaded fitting (usually 1/2" IPS). A front threaded spout usually does not integrate a diverter.
2 Rear threaded. The pipe connection is made at the rear of the spout. These spouts can be either diverters or tub only.
3 Slip on. These spouts will work with just a clean, open copper pipe, as it has a set screw adapter to clamp the pipe.
Soldering to the nipple with the PEX attached is not optimum, but can be managed if you have room to tightly wrap a water saturated cotton rag around the copper and extended over the PEX portion. The water won't allow the PEX connection to go above 212 until it dries out. You will need several inches of bare copper pipe on the end to solder to. (Just TRY to a solder a pipe with any water in it.) Practice your soldering ahead of time and you will become confident of solid, leak free joints.
This thread has some good advice on soldering
This page describes tub spouts.
Answer from HerrBag on Stack ExchangeHas anyone used Sharkbite fittings for copper pipe?
plumbing - Can I use SharkBite connectors on a copper stub out? - Home Improvement Stack Exchange
Sharkbite 1/4 in copper coupling doesn't fit 1/4 in fridge waterline (poly tubing); what am I doing wrong?
Sharkbite slip coupling on 1/4 inch copper hose pipe
Videos
These things seem like the perfect product. Does anyone have any long term experience with these leaking? How are they to work with?
Link: http://www.sharkbite.com
Edit:
Sounds like nothing but great things to say about them. I'll be using them as required. This latest project was a dishwasher installation.
If you are trying to install a screw-on tub spout, it might not tighten up, because the SharkBite adapter will spin. You would need to use a wrench to tighten the SharkBite side, and that would be hard to do inside the spout.
Some spout basics:
Diverter vs tub only
- Diverter spout models have a pull up knob that blocks the water flow, causing it to reverse and come out the shower head.
- Tub only are just simple spouts, filling the tub.
Spout connection types There are three main types of how a spout connects to the pipe
1 Front threaded. The pipe traverses the length of the spout internally, ending in a threaded fitting (usually 1/2" IPS). A front threaded spout usually does not integrate a diverter.
2 Rear threaded. The pipe connection is made at the rear of the spout. These spouts can be either diverters or tub only.
3 Slip on. These spouts will work with just a clean, open copper pipe, as it has a set screw adapter to clamp the pipe.
Soldering to the nipple with the PEX attached is not optimum, but can be managed if you have room to tightly wrap a water saturated cotton rag around the copper and extended over the PEX portion. The water won't allow the PEX connection to go above 212 until it dries out. You will need several inches of bare copper pipe on the end to solder to. (Just TRY to a solder a pipe with any water in it.) Practice your soldering ahead of time and you will become confident of solid, leak free joints.
This thread has some good advice on soldering
This page describes tub spouts.
Here's a bathtub spout install with sharkbite. Run a length of 1/2 copper pipe as needed from bottom outlet of mixer (use 1/2” female sharkbite adapter) to about 4 inches above rim of bathtub. At bottom end of cooper pipe install a 1/2” sharkbite shower adapter upside down. Get a 1/2” steel pipe threaded at both ends from any hardware store. Screw one end into the spout until tight then screw the other end protruding from spout into the shower adapter. Use “tuff” at both ends to avoid leaks. I use a 6” steel pipe. That’s it. Works fine. (I’m not a plumber >>> DIY)