Engineering Bulletin

Using Corrugated Hose for Vacuum Applications

Using corrugated hose for vacuum applications, both in partial and full vacuum applications, is common. Under vacuum, a hose will compress axially, and may even squirm. In this situation, the braid loses its pressure-carrying function and does nothing except act as a cover to protect the hose. If the ends of a hose assembly are securely attached in known locations, squirm most likely won’t be a problem. The most important thing is to assure that there can be no lateral buckling. We always suggest that you incorporate the “cautionary statement” below when supplying a hose under external pressure since the majority of our testing and the normal use of metal hose is internally pressurized.

For the statement involving the use of corrugated hose for vacuum applications and for further information, click here.