Half coupling

A half coupling is a one-ended coupling form that can create a connection point on a pipe, vessel, or equipment body where the selected construction supports that duty. It differs from a full coupling through its single connection end and the project-defined attachment of the other side to the host component; it is not merely a shorter full coupling. The generic identity does not establish the exact connection end, host attachment, thread form, material, or coating. Selection should define the actual body form, end size and type, attachment and local reinforcement, sealing, connection loads, and project inspection requirements.