Selection of Valve Electric Actuator Models
Sep 26,2022Read More
Cryogenic valves are designed to be used in very cold applications. They are thus most popularly used by companies that work with Liquefied Natural Gas (LNG) or Compressed Natural Gas (CNG). They are differentiate from other standard valves in the modern market due to their ability to be fully functional both in temperatures as low as -320 degrees Fahrenheit (-196 degrees Celcius) and at pressure ratings as high as 750 psi. For instance, the oil and gas industry frequently uses cryogenic temperature ranges starting at -238 degrees Fahrenheit (-150 degrees Celcius). Additionally, some gasses aren't labeled 'cryogenic' because of their temperature, but rather because they require more than a simple pressure increase to compress their volume. Cryogenic valves are built to help transport and store such cryogenic gasses safely and efficiently.
MstnLand's series of LNG filling nozzle is an inflatable device used to inflate a vehicle-mounted liquefied gas cylinder.
MstnLand's series of cryogenic gas return nozzle is used to ensure connectivity and depressurization.
MstnLand's series of cryogenic gas refueling receptacle is the filling port on the LNG vehicle cylinder.
MstnLand's series of cryogenic gas relief valve is used as an ultrahigh pressure protection device for the low temperature storage tank, tanker and tank car, and the Cryogenic relief valve will be...
MstnLand's series of cryogenic shut-off valve with short stem design. It's used to cut off or connect the fluid medium.
MstnLand's series of cryogenic gas breakaway coupling can effectively and quickly break off the conveying equipment in a short time and ensure that the low temperature liquid does not leak in the ...
MstnLand's series of cryogenic gas pressure regulator is used to manually adjust the pressure on the low temperature liquefied gas tank.
MstnLand's series of cryogenic gas check valve for instrument is used to prevent reverse flow of the pipeline.
Cryogenic valves are available in a variety of shapes and sizes to be able to function under different pressure ranges. Some of the commonly used cryogenic valves are ball valves, globe valves, gate valves, butterfly valves, solenoid valves and relief valves. Users have the option of operating the cryogenic valves manually or automatically (needed in large systems).
Cryogenic Ball Valves
As understood by the name, this valve has a ball and includes a Polytetrafluoroethylene body. These feature better flow characteristics than the globe valves. They perform excellently when a tight shut-off is needed in multiple applications. However, the ball valves are more likely to be worn out along the seals and around the ball itself. They are mostly preferred in applications that require an unrestricted flow path.
Cryogenic Relief Valves: These bring pressures to a pre-determined value and protect from over-pressurization. The relief valves are intelligent enough to let of steam in case safety limits are exceeded.
Cryogenic Globe Valves: They are named after their spherical shape and contain a movable disk internally that rotates at an angle of 90 degrees to the plane of its body seat. These are quite complex and are great for long-term sealing performance. However, they may not resist moisture for long and are not recommended for use when flow rate is paramount.
Cryogenic Gate Valves: In these valves, there is a wedge-shaped gate that swings to close in line with the mating body seat. They result in minimal pressure drop even in its fully open position. Similar to the ball valves, they offer good flow characteristics but are hindered by wear and tear.
Cryogenic Butterfly Valves: The butterfly valves utilize a circular disk at the center that is responsible for the shorter length of the butterfly valves than the aforementioned varieties of cryogenic valves. They are typically sued when quick opening and closing actions are required. Moreover, these are lighter and cheaper too with simplicity of operation.
Cryogenic valves operate at temperatures below -40°C, and are mainly used for gas liquefaction. In separation, transport and storage equipment, their operating temperature can reach below -270 ℃. Cryogenic valves are increasingly used in industrial sectors such as petrochemical or natural gas. In other words, with low-temperature working materials which are also toxic, flammable or explosive and have a high permeability. Therefore, they must meet a number of special requirements to ensure their safe use.
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