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Hyper-Cryogenic Emergency Shut-off Valve

Manual Operated Valve for Hyper-cryogenic

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Emergency Shut-off Valve C800 01 Emergency Shut-off Valve C800 02





Emergency Shut-off Valve C800 03

Table of Contents

Hyper - Crylogenic Emergency Shut-Off Valve     
         Specification    1
         Dimensions      2
   
Manual Operated Valve for Hyper-Cryogenic     
          Specification    4
          Dimensions      5
   
   
   
   

 

Hyper-Cryogenic Valve
Since 1984, HAITIMA has been making efforts to push forward domestic manufacturing of ultraslow temperature vessels with
nitrogen as a key ingredient. In response to this domestic manufacturing effort, we have also started to develop related valves.
In this area, we are a pioneer. With high growth during 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, etc., related industries of low
temperature also grew smoothly, in particular, development in the use of nitrogen in semiconductors and in the electronic
industry, etc. During the past 20 years, we have been supplying ultra-low temperature valves. Regarding quality management,
we demand high safety, material inspection  (material analysis, tension check, and low temperature spot-check), non-
destructive tests (radiation check, liquid penetration non-destructive test, ultrasonic non-destructive test) sub-zero environ-
ment, various pressure checks, low temperature check, and oil-free treatment & inspection. In addition, we have a powerful
technical team. For many years, we have been making great contributions to technological innovation.

The advantages of the design and structure
• Lightweight and small sized valve housing ---- To reduce heat loss of the valve housing, the lightweight and small sized valve
   housing for ultraslow temperature application was specially designed. The welding method of the handle portion is the most
   suitable processing method.
• Long bonnet of proper length ---- If the temperature of the ground portion is below the dew point, it is prone to coagulate
   with the moisture in the air, causing difficulty in operation. If the temperature is too low the glue loses some of its effective-
   ness in sealing, which can cause leakage. Consequently, to prevent the heat of the liquid from directly causing this, the long
   bonnet was specially designed. This length is the most suitable length design based on the tests and previous performance.
• Ideal valve seat (Soft touch) ---- The SW or BW valve housings use soft touch valve seats so that the piping cannot be taken out
   easily and the valve seat and valve housing may not be damaged. Disc sealing is using low temperature characteristics that
   can stabilize 15% of Glass, Teflon and 3FPCTFE, which can be exchanged when necessary. (Metal touch) ---- Liquefied gas lacks
   lubricity. Using Austenite Stainless as the material,alve housing is designed. The valve seat is molded with the valve body as
   a whole. The bearing surface uses Stellite metal which largely increases the life.
• The structure that prevents regasification pressure rise The body of globe valve uses the flexible type that can be fully sealed.
   But now if the liquefied gas inside the valve housing is sealed absorbing heat from the outside, it may result in regasification
   and cause a pressure rise as the temperature rises. To avoid this, the structure of the relief hole was designed on the upper
   flow measurement.
• Durable GLAND packing U-Ring molded with durable Teflon can be operated. Light and handy and be used semi-
   permanently. When necessary, it may be made corresponding to various combinations of Packaging.
• Gaskets with good low temperature characteristics Gasket is made of GYLON. It has small shrinkage, good compression restor-
   ing features and stable low temperature characteristic (-210~260°C). When necessary, it can be °C
• Handling acid gasoline Ultraslow temperature valves are handled using oil-free Trichloroethane when being assembled,
   which can be used with case.