| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: device represents a tape made from rubber or polymer material, which is neutral in relation to working medium. Longitudinal channels are made inside the tape. Besides, on one side, the channels are blind and include a rigidly fixed developed spring on inner side, and on the other side, they are provided with a valve for pumping of liquid of the required pressure or its relief.EFFECT: providing the possibility of the device operation at high pressure and under conditions of impossibility of installing standard shutoff valve.1 dwg |
