Large Flanges L.F. and L.M.

[KentCaudill]

I am looking at a BM that calls out a 92" LF special flange and a 72" Class 350 L.M. special. What does the L.F AND THE L.M. stand for?

Thanks for your help, Kent.

 

[unclesyd]

Both flange are used in/with vacuum systems.

LF Flange

http://www.mdc-vacuum.com/Search/doc/tech_014.htm

Here are all the Flanges

http://process-equipment.globalspec...wports_and_Vacuum_Doors&comp=3249&sectionid=2

 

[donf]

ASME B16.5 lists "L"arge "M"ale and "L"arge "F"emale flange facings. Just a guess.

Donf