WORK TEMP≥-46℃：MATERIAL：LF1
WORK TEMP≥-101℃：MATERIAL：LF3
WORK TEMP≥-196℃：MATERIAL：F304,F316
Size 1/2″--3/2″ Class 150--600Lb
ANSI,BS,DIN,JIS,GB Flange Connection as customer's requrement.
WORK TEMP≥-101℃：MATERIAL：LF3
WORK TEMP≥-196℃：MATERIAL：F304,F316
Size 1/2″--3/2″ Class 150--600Lb
ANSI,BS,DIN,JIS,GB Flange Connection as customer's requrement.
low temperature cryogenic valve is in working within the low-temperature valve. The delimitation of its operating temperature, at present there is no uniform requirements. For example, Russia (former Soviet Union) to the - 272 ~ - 153 ℃ temperature range of the valve is called ultra-low temperature valves. Japanese liquefied petroleum gas management rules work below - 150 ℃ valve known as the ultra-low temperature valves. China has not API CAST STEEL VALVES yet provided the temperature limits of ultra-low temperature valves. In the valve industry, are becoming more - 100 ℃ as ultra-low temperature valve operating temperature limit, that is, work at temperatures below - 100 ℃ valve set at ultra-low temperature valves. This is a valve according to the materials used to carry out demarcation method.
Low-temperature steel gate valve infomation:
Low temperature gate valve fit for methane, liquefied natural gas, has been en-, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen media products such as low-temperature
characteristics of
1, in order to prevent abnormalities in the cavity boost, the import side in the gate set relief hole
2, in accordance with the valve operating temperature to determine the length of the top of valve cover to ensure a reliable stem seal packing
3, in accordance with a reasonable selection of operating temperature packing, gaskets and other parts of the material
4, to strictly control the chemical composition of materials and low-temperature impact toughness and other mechanical properties .
5, using a variety of standards and piping flange type sealing surface, to be applied to various engineering.