With the piggable I.S.T. sliding coupling the coupling of hoses or pipeline connections is made easier. Two coupling halves slide on each other until they are locked. Both coupling pairs are sealed by an O-ring that lies in a special groove. The protected locking device grants a safe closure of the coupled halves.
The coupling system can be completed with a coding system. Thus each coupled connection can be monitored by a control unit so that operational errors are avoided.