Cryogenic ball valve is a kind of valve that is mainly for ethylene, liquefied natural gas and other chemical device. It's mainly divided into cryogenic floating ball valve and cryogenic standing ball valve. Long-necked structure is not usually applied for temperature above -50ºC, and applied for temperature below -50ºC. It aims to protect the stuffing box. Locate stuffing box far away from low temperature. To guarantee sealing effect of the stuffing, cold insulation material also can be wound to prevent loss of cold energy. it's a kind of valve that mainly for ethylene, liquefied natural gas and other chemical device. Design and manufacture standard
BS6364 Valves For Cryogenic Service
ASME B16.5 Pipe Flanged And Flanged Fittings
ASME B16.25 Butt Welding Ends
ASME B16.10 Face To Face And End To End Dimension Of Valve ASME B16.34 Valves-Flanged, Threaded, And Welding End
SHELL SPE 77/200 Valves In Low Temp&Cryogenic Services
Inspection and test standard
API598 Valve Inspection And Testing
BS6364 Valves For Cryogenic Service
SHELL SPE 77/312 Fugitive Emission Production Testing
ISO 15848 Industrial Valves-Measurement, Test And Qualification Procedures For fugitive Emissions