powervalves bevel up???

[spark]

I have done a lot reading, can not find any posts that say which way is up (bevel up or bevel down???) for proper installation of powervalves. I bought a used sled and just want to make sure. The caps were installed all messed up.

 

[EricMichael]

beveled end goes down

 

[spark]

Thanks a lot. I was lost.