Specifies whether a full face gasket is used for the flange. Gaskets for full face flanges are usually of soft materials such as rubber or an elastomer, so that the bolt stresses do not exceed allowables during gasket seating. The software adjusts the flange analysis and the design formula to account for the full face gasket.
ASME Sec. VIII Div. 1 does not cover the design of flanges for which the gasket extends beyond the bolt circle diameter. The software uses the design method from the Taylor Forge Flange Design Bulletin.
Codes such as EN 13445 and PD 5500 have explicit rules for flanges with full face
gaskets. Consult the appropriate code.
Program Selects
The software automatically selects a full face gasket flange only when the gasket ID and OD dimensions match the flange ID and OD dimensions (except for a blind flange). Otherwise
Full Face Gasket
Specifies a full face gasket flange. Use this option when the gasket ID or OD dimensions do not match the flange ID or OD dimensions, but the gasket extends beyond the bolt circle diameter.
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Not a Full Face
Specifies that the flange gasket is not full face.