Polybutylene to Copper transition?

[smallshop]

I'm wondering what the pros use for this? Is it common to use the couplings, the gray ones? They just seem so cheesy (but what do I know). I can't seem to find a sweat fitting that allows a crimp on connection directly to the pb.

Thanks for any help,
Jeremy

 

[Kingsotall]

Sharkbite. Big orange box sells them.

 

[Sponsor]

 

[hj]

Pb

Sharkbite, or the gray QEST compression adapters, (they look like flare fittings but are not).

 

[smallshop]

Sharkbite doesn't officially support pb though, do they? At least it isn't listed on the packaging.

Are Sharkbites ok as in wall fittings (ie., no access panel)?

 

[Jadnashua]

For the listed pipe types, Sharkbites are approved for enclosed and underground use. Check with your local inspector, as they may have ammendments.

 

[Redwood]

Sharkbites are not listed as approved for polybutylene. For PEX they are listed and require the use of a plastic stiffener that inserts into the PEX. PEX is a SDR-9 dimension and is a thicker wall tubing than Polybutylene. The stiffener would not work with the thinner wall Polybutylene. Both have an outer dimension that is copper tube size.

I have used many Sharkbites on Polybutylene under trailers but I do shy away from using them in a house. I have had no complaints from the usage of any of them that I have installed under trailers...

There are approved fittings that transition PEX to Polybutylene...
http://www.watts.com/pro/_products_sub.asp?catId=70&parCat=512

 

[Kingsotall]

I know they work on Qest pipe. Cash Acme even makes a sharkbite PRV.

 

[Cwhyu2]

PB comes in two strengths ,IPS & CTS Fittings vary between the two.
If you can take a sample to your supplier they can fix you up right fitting.

 

[smallshop]

So really, the only good-approved-safe way to do it is to go copper to pex to polybutylene...

I hate ugly hacks...