Cryogenic freezing is a type of freezing that involves extremely low temperatures that are often in the hundreds of negative degrees. There are various industries where cryogenic freezing is necessary. When working with cryogenic liquids, you may need to use cryogenic liquid relief valves.
The Role of a Relief Valve
Relief valves are used to control liquids. Certain gases are safer to store and transfer when they have had their temperatures lowered to a state where they are kept in a liquid form. Before these gases are cooled to transform them into liquids, it is necessary to remove various contaminants, gases, and moisture.
The Requirements of a Cryogenic Relief Valve
Cryogenic liquid relief valves must be able to withstand a considerable amount of system pressure. This is because the amount of liquid that is being stored and transported is often considerable.
When selecting cryogenic liquid relief valves, it's important to know the exact type of valve you will need based on your application. All valves need to be able to shut tightly because the liquids are sensitive and can cause damage to equipment when there is leakage.
Durability
One of the concerns with a cryogenic liquid relief valve is how long the valve will last before it needs to be replaced. This is partially due to the amount of friction that is generated when the valve is turned, which is based on the design of the valve.
Efficiency
Another consideration is how fast the valve is able to be turned on and off. Being able to turn the valve quickly is important when you will need to turn the valve very fast during an emergency.
Corrosion-Resistance
Some valves are better able to resist corrosion than others. For systems that have very high flow rates, it's important to choose a type of valve that is corrosion-resistant. In other cases, the wear-and-tear on the valve is a more important consideration.
Thermal Transfer
Because of the very low temperature that a cryogenic liquid is kept at, it's important to use a valve made out of materials that have a very low thermal transfer so that the valve isn't affected by these temperatures.
Ordering Your Valve
It's important that the cryogenic liquid relief valve be stored in such a way that you won't have to worry about contamination. Then, when the valve arrives, you will be ready to install it on your unit found within your industrial facility.
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