Lap Joint Flanges are a less requested type of flange with an extended hub and a machined radius at the base of the flat face. This curved radius allows for the placement of a pipe fitting known as a stub end.
This type of flange is made to saddle over stub end fitting for rotation. The pair are an excellent choice for situations which require a constant removal and reinstallation in order to inspect the connection. This combination allows for the rotation of the lap joint over the stub end for accurate bolting.