Recommendations for New Water Softener

[JD3263]

A threaded adapter. If you want the adapter to be stronger, you can buy a schedule 80 PVC MPT adapter. Standard would be schedule 40. The OD of the pipe is the same for each.

Plastic threads into metal female thread is fine. Other way is not, because schelule 40 plastic female thread can split. Use both PTFE tape and pipe dope that is OK for plastic.

Schedule 80 female threads can work, but you have to be careful to not over-torque. There are also female NPT thread pvc adapters that have a reinforcing band of metal. Those are stronger.

Remember the duct seal to keep the bugs out.

If you have a moment, can you provide a HD or Lowes link for the adapters you were talking about, please? I can't seem to find them on either site. I'm able to find the MPT adapter with a slip-joint on the other end, but I can't find an adapter that is MPT on both sides - one to screw into the bypass and the other end for connecting the right-hand adapter. ...or am I looking at this wrong?

Thank you!

 

[Reach4]

What size are those threads-- if 3/4, https://www.homedepot.com/p/Charlot...Male-Adapter-PVC021090800HD/203811638#overlay for the left-hand.

For the right, https://www.supplyhouse.com/Sioux-Chief-647-PG3-3-4-PVC-x-3-4-FIP-MetalHead-Straight-Adapter
I would fear that https://www.homedepot.com/p/DURA-3-...IPT-Female-Adapter-Fitting-C435-007/100345266 would split.

If using CPVC instead of PVC, then https://www.homedepot.com/p/Apollo-...tainless-Steel-FPT-Adapter-CPVCFA34/312453132 should be reliable.

Corregated stainless steel connector lines would be good. https://rectorseal.com/products/plumbing/water-connectors/
PEX would be good, tho it is not nearly as flexible as some people imagine.