Right way to extend radiator piping

[4lane]

I have hydronic radiator fed by (I believe) 3/4" copper piping. Piping was put in before the floor tile was completed. After I completed the tile, the piping is now short about 1" or less. What kind of fitting would be best to close up this spacing? I'm thinking some male/female adapter that I can put between the water inlet and shut off valve but couldn't find anything that size...

Thank you!

 

[Geofd]

Can you extend from below????

 

[4lane]

If I start cutting into pipe and soldering, I could. But I was hoping to just unthread the valve, and thread on an extender. I see them all over for 1/2” but have not found anything similar for 3/4” except for garden hose adapters.

 

[4lane]

I did find some general brass 3/4" NPT female 3/4" NPT male adapters but they only have a working pressure of 150 psi. Will that work?

 

[Hamberg]

Won't be pretty but a 3/4" union (sweated-in) would get you pretty dang close.

 

[Geofd]

If you have the capability to solder I would just for estetics but the 2nd fitting you show would work, or the union the other poster might work
I would cut down below connect the valve to the radiator go back down and solder no extra pieces ,and they would all look the same

 

[4lane]

Thanks all! I will try these guys first and see how it goes.