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Reference: SIG/99
Sizes available: DN15-DN300
Body Material: AISI 304 (1.4301), AISI 316L (1.4404)
Standard: EN1092-1



The Flat Face (FF) flange has a gasket surface in the same  plane as the bolting circle face. Flat face flanges are never to be bolted to a raised face flange. ASME B31.1 says that when connecting flat face cast iron flanges to carbon steel flanges, the raised face on the carbon steel flange must be removed, and that a full face gasket is required. 






EN1092-1 Flat Flange PN10