Safety valves and ball valves for cryogenic applications
Handling cryogenic gas and other media such as oxygen, nitrogen, liquid ammonia, krypton and carbon dioxide is dangerous and challenging, thus it requires the usage of high quality components. A medium is considered cryogenic, if its temperature is significantly below boiling temperatures. Many materials become brittle when they come in contact with cryogenic media, which can result in a defect of the system and leaking media. If humans come in touch with cryogenic media, they can suffer from dangerous injuries and frostbite. It is thus understandable, that the norms and regulations for cryogenic media are especially strict. Special cryo safety valves protect both humans and the machines when working with cryogenic media. Usually, two of the same safety valves are implemented, which can both be controlled using a ball valve specifically made for cryogenic media. Using two safety valves is necessary, for the tough conditions can lead to precipitations.
Cooling vans using nitrogen, containers, ground freezing applications or other machines using cryo temperatures – cryo safety valves are mandatory as protection from overpressure in all of these applications. The valves are authorized for temperatures of up to -196° Celsius. Cryo valves are made of stainless steel and come with a very robust PTFE seal. Depending on the requirements they have a threaded connector between ¼“ to 1“. The pressure range, depending on the application, lies between 0,2 bar and 70 bar.
Advice from our experts on requirements for your cryo valves
Medical applications with cryogenic temperatures or the dosage of liquid nitrogen come with specific requirements for cryo valves. Our experts would love to help you find out which valve suits the needs of your cryo application. If you can not find what you are looking for, please contact us for custom-made solutions. NieRuf offers a wide range of valves for cryogenic gases, nitrogen, liquid ammonia and other cryogenic media. Do not hesitate to contact us, or just use our web shop and order your new security valves for nitrogen or your cryo ball valve with rapid delivery.