FIELD: piping systems. SUBSTANCE: proposed device contains closing member made in form of ellipsoid consisting of separate sections interconnected by joints. Extreme sections are furnished with hydraulic cylinder. Cooling member is made in form of ring, being arranged directly on closing member. EFFECT: simplified design of device, improved reliability of pipeline closing for repair. 4 dwg
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Authors
Dates
2003-10-10—Published
2000-01-20—Filed