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Low temperature stop valve

Low temperature stop valve

Low temperature shut-off valve refers to a valve in which the closing element (valve disc) moves along the centerline of the valve seat. According to the movement of the valve disc, the change in the valve seat opening is directly proportional to the valve disc stroke. Due to the relatively short opening or closing stroke of the valve stem and the highly reliable cut-off function, as well as the proportional relationship between the change of the valve seat opening and the stroke of the valve disc, this type of valve is very suitable for regulating flow.

  • Item NO.:

    XUVAL33-331
  • Lead Time:

    45 Days
  • Product Orgin:

    CHINA
  • Brand:

    XUVAL
  • Shipping Port:

    Shanghai
  • Payment:

    100%TT
  • Color:

    silvery
  • MOQ:

    1
Products Details
Main characteristics of low-temperature ball valves:

Low temperature globe valves generally do not use a long neck structure for temperatures above -50 ℃. For globe valves below -50 ℃, the neck length T is generally 500mm, or determined according to our company's design and calculation. Low temperature globe valves are mainly used to output liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. They are not only flammable and explosive, but also need to be gasified during heating, and the volume expands hundreds of times during gasification.

The material of liquefied natural gas valves is very important. If the material is not qualified, it can cause external or internal leakage of the shell and sealing surface; The comprehensive mechanical performance, strength, and rigidity of the components cannot meet the usage requirements or even break. Causing the leakage of liquefied natural gas medium and causing explosions. Therefore, in the process of developing, designing, and developing liquefied natural gas valves, material is the primary and critical issue. The valve body and valve cover are made of LCB (-46 ℃), LC3 (-101 ℃), CF8 (304) (-196 ℃) low-temperature globe valves. After special low-temperature treatment, the rough machined parts are placed in the cooling medium for several hours (2-8 hours) to release stress, ensure the low-temperature performance of the material, ensure the precision machining size, and prevent the valve from being affected by low temperature conditions.



Product features and applications:

 Low temperature shut-off valves are suitable for low-temperature media such as methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, and liquid hydrogen.


Part Name Material quality
Body DCr18Ni9
Bonnet 0Cr18Ni9
Valve flap JCr18Ni9/H62+FTFE
valve stem DCr1SNis
SPIRAL WOUND GASKET 304/FTFE
Filler FTFE/FCTFE

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    If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.