KBI unions

[Malifluous]

I was hoping to find a KBI union that is 10" diameter;. It seems to me ( and I HOPE I AM WRONG) that there are no unions like this larger than 4". Anything over 4' must use a flange style union? I was hoping to not have to loosen bolts everytime i want to disconnect a pipe. I like the screw o n unionsAny help with this would be great. Please see link :
I need this in 10", i would settle for 8"

http://www.acehardware.com/graphics/product_images/pACE3-963897dt.jpg

[chudsosoft]

I just got a 3" union for a project I'm working on, and considering how enormous and clunky it is I couldn't imagine a 10" union weighing in at under 20 pounds.

[kcress]

At 10" flanges are easier to deal with.

Use a bunch of nylon or fiberglass bolts.