Connection for joining a pipe having a flared end to a fixed connection piece, such as a pump

Claim 1

A connection for joining a pipe having a flared end to a fixed connection piece comprising, a conventional joint piece for flared connections provided at each end with an outer thread and a conical end surface intended to be received by a flared pipe end, and an insert piece screwed onto the end of the joint piece facing the fixed connection piece for abutment against the end cone of the joint piece and against the end surface of the fixed connection piece, said insert piece being provided with a shoulder for engagement with a clamping flange by tightening of the clamping flange against the fixed connection piece by means of tightening means and a radially inner end portion which extends some distance in front of the end surface of the shoulder towards the fixed connection piece and is joined to the body of the insert piece through an intermediate portion, so that when the clamping flange is tightened against the fixed connection, said inner portion of the insert piece will engage the fixed connection piece and be driven to bite into the end cone of the joint piece until the shoulder of the insert piece abuts against the fixed connection piece.