AS-Schneider tests its cryogenic valves in liquid nitrogen. Helium is used as the test medium.<\/div><\/div><\/div><\/div><\/div><\/article><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t<\/i>\t\t\t\t\t\t\tPlay Video<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\n\t\t\t\t\t\t
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\n\t\t\tWhat should engineers pay attention to during assembly of cryogenic valves?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
What should engineers pay attention to during assembly of cryogenic valves?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\tThe cleanliness of the valve is very important in cryogenic application. Grease or lubricants get very hard at low temperatures. If particles lay down in sealing areas, like between the ball and the seats of a ball valve, there is no flat contact and sealant gets leaky. Therefore the valve has to be cleaned and degreased from the manufacturer\u2019s side.<\/p>
But also the buyer has a responsibility for the cleanliness of the valve. He has to ensure that the valve is assembled with clean tools, also all connections and piping parts have to be free of pollution of any kind.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The cleanliness of the valve is very important in cryogenic application. Grease or lubricants get very hard at low temperatures. If particles lay down in sealing areas, like between the ball and the seats of a ball valve, there is no flat contact and sealant gets leaky. Therefore the valve has to be cleaned and degreased from the manufacturer\u2019s side.<\/p>
But also the buyer has a responsibility for the cleanliness of the valve. He has to ensure that the valve is assembled with clean tools, also all connections and piping parts have to be free of pollution of any kind.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t