Kelite Group

Cryogenic Globe Valves

Cryogenic globe valves are mainly designed for gas treatment processes and transportation and storage of liquefied gasses such as liquid nitrogen, LNG and oxygen, etc. These valves are needed to be operated to provide assured leakage rates. These valves which are advised to use below -196 degree C are made with an extended bonnet.

Key Application(s)

  • For application in fields such as the electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, and others.

Design Features

  • Sizes from 2” to 24”(50mm～600mm)
  • Classes range from 150-2500 CLASS
  • Operating temperature of -196℃～300℃ (the range of service temperature may vary for different materials)
  • As valves subject to a temperature ≤-101℃ shall be protected against subzero deformation, the main parts are subzero treated
  • The sealing faces of the valve seat and valve clack are hard faced with alloy to improve the erosion resistance and extend the service life of the valve
  • The friction between sealing faces is smaller during opening and closing, facilitating a longer service life
  • The valve clack is of taper, needle, ball and parabola types, and can be used to adjust the flow rate
  • SS+ graphite or metallic seal or pressure self-sealing is adopted between the valve body and bonnet for reliable sealing
  • Rising stem structure, making the valve switch position be clear at a glance
  • The valve stem thread will not come into contact with the medium, so the corrosion of medium to the thread is reduced
  • The small switching moment, reliable sealing
  • The valve clack can be machined into a parabola, spherical, needle shapes, etc. according to the requirement of the customer. It can be used for adjustment (rough adjustment) on the pipeline
  • The short stroke is suitable for application at positions subject to frequent opening
  • Y-shape stop valve – the streamline flow pass has a very high flow coefficient, and can maximally reduce the pressure drop through the system
  • By improving the structural design and selecting reasonable packing structure and qualified packing supplier, the valves can meet the Class A sealing test requirements of ISO 15848 FE

Reference

Design Standard(s)

  • BS 1873
  • BS 6364
  • ASME B16.34

Face-to-Face

  • ASME B16.10

End Connection

  • ASME B16.5

Test Standard(s)

  • API 598
  • ISO 5208

Documents

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