FIELD: pipe-lines. SUBSTANCE: shut-off device fitted with drive is placed into chamber mounted in body. Chamber is built in the form of pipe with plugged faces and vertical pipes. Each face of pipe houses drive drum. Shut-off device is manufactured in the form of flexible hoses turned inside out and wound with one ends on proper drum to form spaces filled with compressed gas. The other ends are tightly anchored over circumference of pipe. EFFECT: simplified design, enhanced reliability and efficiency. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SHUT-OFF DEVICE | 0 |
|
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