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If you want to hold a vacuum, then our vessels are the answer.
At Didion Vessel, we have years of experience in manufacturing large vacuum vessels and chambers. For example, we have met a number of strict specs, including many NASA specs. Our engineers specialize in custom designs, which we design to meet your needs and industry standards. We can also provide you with a complete vacuum system, including the pumps and controls. Further, vacuum jacketed pressure vessels and piping can be manufactured. And finally, we provide in-house testing, such as helium mass spec testing and decay tests. You can rest easy having us design and build your unit!
At Didion Vessel, we have years of experience in manufacturing large vacuum vessels and chambers. For example, we have met a number of strict specs, including many NASA specs. Our engineers specialize in custom designs, which we design to meet your needs and industry standards. We can also provide you with a complete vacuum system, including the pumps and controls. Further, vacuum jacketed pressure vessels and piping can be manufactured. And finally, we provide in-house testing, such as helium mass spec testing and decay tests. You can rest easy having us design and build unit!
Our shop is located in Bellevue, Ohio (USA). At this location, we have the space needed to build tanks that are up to 15 foot in diameter. We also have years of experience; not only as a vacuum chamber manufacturer, but, also, in pressure vessels. We have built thousands. Even though most units are made out of 304 stainless steel, our chambers can be made out of a wide array of alloys. Likewise, we perform all machining in-house, with the ability of getting ring groove finishes down to 4 – 8 micro-inches. And lastly, we provide RT of welds, pressure tests, vacuum decay tests, helium mass-spec tests, and PMI testing… all in-house!
At times, there is a need to design units to contain pressure. Didion Vessel can manufacture and stamp vacuum vessels to ASME Sect VIII, Div. 1, 2, or 3.
We have the means to manufacture cryogenic vessels and piping with vacuum jackets. What is this? Your inner tank or piping has an outer jacket, which has a vacuum pulled within the annular space between the jacket and tank. In most cases, the vacuum works in tandem with multi-layered insulation (MLI) or perlite within the same annular space. The extra cost for the jacket is worth it. Jacketed units have higher efficiency heat values when compared to a standard insulated unit. They help reduce boil off gas, which is a major issue in many cryogenic industries. The result? Since boil off gas is reduced, you will see an improvement in the efficiency, cost, and effectiveness of your facility.
They are tanks that are under a very high vacuum (which means it has a very low pressure). A “perfect” vacuum is 0 psia. Keep in mind, on average, the pressure in the air around us is 14.7 psia. So, large vacuum chambers must hold a lower pressure than the atmosphere around them.
What are their uses? One use is in the fields of aeronautics and the exploration of outer space. Many of the components needed for these fields are first tested in large vacuum chambers. But, the uses of a vacuum do not end there. Many processes require total control over the make-up of the gas within a space. This is done by firstly pulling a vacuum to free the vessel of any gasses that would contaminate the process. Then, the unit has gases (inert in most cases) placed into it in order to achieve the atmosphere that the customer needs for their process. It is important that there are not any leaks in the chamber that would contaminate the environment inside. That is why leak testing is so vital.
Didon’s Mechanical is a family of companies, which includes Didion Vessel, Didion Autoclave, and Didion Separator. All are owned and operated by the Didion family in Belleuve, Ohio USA.
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