1/2 Copper Union Question

[nate456789]

See the attached picture.
The right union is 1/3 the price of the union on the left. The union on left is mostly copper / copper alloy.
What is the right one made out of? Is is safe for boiling wort?

Obviously I would like to use the cheaper right one if it is not going to leach lead or some other bad stuff into the wort.

Both of these were purchased at Home depot and Menards Hardware Stores
Thanks

 

[audger]

impossible to tell from a picture alone. though i know ive seen some seemingly identical fittings at lowes where one was like 50 cents and the other was $4-6. i dont know how to explain their prices.

 

[pickles]

Looks like cast brass. It could be pickled to remove contaminates.

 

[nate456789]

Amazon lists the same thing as Cast Copper. It is Nibco Brand.
Guess I will pickle them and hope for the best.

 

[nate456789]

Little more research I found this.
http://www.nibco.com/assets/LFcastNPI.pdf
The fitting is the 733 union so it looks like lead free Brass after all.

In case anyone comes across these at your local hardware.