Is a STRAUB-OPEN-FLEX with its cut sealing sleeve leak-proof?
How so? Yes. The sealing sleeve is first manufactured as though for a FLEX coupling and then carefully cut through. This clean cut ensures edges with a 100% sealing performance. In what intervals do the bolts have to be re-tightened? The bolts never need to be re-tightened. STRAUB couplings are absolutely maintenance-free. Do pipe ends need to be prepared? No, simply remove dirt, rust or paint remains. Debur the pipe ends if necessary. What is the life expectancy of a STRAUB coupling? 25 years or more is possible. There are couplings in use since 1974 What is the purpose of a strip insert? Protection of the sealing sleeve under negative pressure conditions, to bridge large gaps between pipe ends, to prevent rubber swelling, to take up axial movements with angular displacement and to overcome axial displacement or external over-pressure. How does the length changing concept of the STRAUB-FLEX/-OPEN-FLEX work? The rim of the seal is flexing, thereby taking up any axial movement in the pi
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- Is a STRAUB-OPEN-FLEX with its cut sealing sleeve leak-proof?
