First Time: Dry-Cooler Install

[marksofine]

Alright I've got a doozy here for you I want to replace all 4 of these connections to NPT but am not working with much space/length on existing manifold to this dry-cooler. Tried heating to remove fittings but I feel they are likely brazed on (or maybe copper too thick and needs more heating)! Thoughts on removing these wrought ends so I can replace with proper NPT fittings?

Imgur link of fittings

https://imgur.com/a/pu57sLI

Thanks all for help!

 

[Breplum]

Are they refrigerant piping? If so, then of course they are brazed!

 

[Sponsor]

 

[marksofine]

Are they refrigerant piping? If so, then of course they are brazed!

Water/Glycol Mixture. So not quite refrigerant. Nothing in the vapor phase I should say!

 

[Breplum]

It does look brazed from the color of discoloration. What size is that pipe? Looks like copper DWV fitting. But un-brazing is not a thing.

 

[marksofine]

It does look brazed from the color of discoloration. What size is that pipe? Looks like copper DWV fitting. But un-brazing is not a thing.

2" ID, maybe 2.25" max.

 

[Tuttles Revenge]

WOW... good luck getting that tubing out of those elbows.

I would try brazing a NPT MIP on the end of those first tho