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1976年乌拉尔机械厂创制了一批工业试验性的НБ45-320-750(YНБТ-800)三缸单作用泵。它的阀组件的连接尺寸依照OCT标准26-02-1129-75 No.7。目前,这些泵正在秋明油田以及白俄罗斯和乌克兰的一些油田进行工业性试验。
1976 Ural Machinery Factory created a number of industrial experimental НБ45-320-750 (YНБТ-800) three-cylinder single-acting pump. Its valve assembly connection dimensions follow OCT Standard 26-02-1129-75 No.7. Currently, these pumps are undergoing industrial tests in the Tyumen oil fields and in some fields in Belarus and Ukraine.