So I'll help you, if you help me!
Here's a picture of a really slick little petcock that I got from Ace for $9.99. I am using it as a radiator drain - it threads right into the 1/4" NPT threads in the drivers side front of the radiator.
(I am not so sure about it's classification as a Valvula Recta, though!)
Anyway - It has a solid attachment point for a short piece of hose so your antifreeze doesn't pour all over everything.
It is 100x better than the crappy petcock on the right in which the little "wing nut/hose bib" came loose on me.....
It looks like it will work great.
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