Since 1984, Wyeco has been pushing forward domestic manufacturing of ultraslow temperature vessels with nitrogen as a key ingredient. With high growth during the post-economy era, the industrial use of nitrogen, the use of natural gas, refrigeration industries related with this heat use of: liquid nitrogen, liquid carbon dioxide, related industries of low temperature also grew, in particular, development in the use of nitrogen in semiconductors and in the electronic industry. During the past 20 years, Wyeco have been supplying ultra-low temperature valves. Regarding quality management, Wyeco demands high safety, material inspections (material analysis, tension checks and low temperature spot checks), non-destructive tests (radiation checks, liquid penetration non-destructive tests, ultrasonic non-destructive tests) sub-zero environment, various pressure checks, low temperature checks and oil free treatment and inspections.
Specification Type Globe Type
Size 1/2", 3/4", 1", 1-1/2", 2", 3", 4"
Bonnet Standard ( 0°C - +100°C) Extension ( -196°C - +100°C)
Valve Stem SUS316
End connection Flanged End, Socket Welded, Butt Welded
Pressure Rating JIS 10K, 20K, 30K, ANSI 150, 300LB, DIN PN16, 25
Seat Ring Standard -PTFE. Extension -PCTFE
Gland packing PTFE.