Thanks everyone for you response.
zdas04, I understand. For this motive gas pipeline has line break and low pressure shut off system and oil pipeline has line break system.
LittleInch your how know and expertise about which is used now help me very much. Thanks!
Hi to everyone!
I have a question. In some projects that I worked saw block valve with line break and low pressure shut off control. All of these were gas pipeline. In oil pipelines I saw line break system in block valve (high rate of pressure drop shut off ). But I participate alone in...