Design Engineer Interview Question:

Tell me what does F.O.F. stand for in piping design?

Submitted by: Muhammad

FOF stands for Face of Flange. A flange has either of the two types of faces:
a) Raised face
b) Flat face
The F.O.F is used to know the accurate dimension of the flange in order to avoid the minute errors in measurement in case of vertical or horizontal pipelines.
Submitted by: Muhammad