Raised face vs. flat face flanges

[P1p3r]

A 10" 1500# RF spectacle blind has a combined thickness of 2 1/2" (including the 1/4" raised faces). If I wanted to buy flat face spectacle blinds instead of raised face, then would the thickness be only 2"?

Thanks,
P1p3r

 

[Gator]

It can be, according to this document (from Sweco):

http://www.pipingdesign.com/paddle_and_figure-8_blinds.pdf

Piping Design Central

 

[racookpe1978]

Remember to change your gaskets also.
And check the bolt toques for those new gaskets.

 

[BigInch]

Please use flat face #1500 at your own risk ONLY. Keep it well away from my back yard!

you must get smarter than the software you're using.