Дочерняя Компания «Укргазодобыча» Национальной Акционерной Компании «Нефтегаз Украины»
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A circulation valve that comprises a body placed between the upper and the lower adapters in which an inlet channel with radial opening is formed. To increase reliability, effectiveness of operation of the device and its service life, in the body a circulation channel is additionally formed, there spring-supported shutoff elements are installed.