Closure for large pressure vessel - has sealing joint and movement joint

摘要

The closure for a large prestressed concrete pressure vessel is applied to a metallic lining of the opening, with an intermediate ring plate contacting the flange. Two seal rings in the intermediate plate make a tight joint. The metal cover rests on the intermediate plate with a ''movement joint'' which is sealed by an OMEGA seal. ADVANTAGE - Ensures that movements of the rim of the vessel or slight irregularities do not impair the hermetic closure.