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This check valve has been qualified at cryogenic temperatures in a bath of liquid nitrogen. The valve showed leakage results under 10 sccm of helium at -320° F. Built into a fitting with standard AS ends, this valve is easy to integrate into existing designs. While it is made from materials compatible with hydrogen and many other cryogenic fluids, the design lends itself to material changes for compatibility to your fluid.
| PART | MATERIAL | SPECIFICATION |
|---|---|---|
| Fitting | Nitronic 50 | AMS 5764 |
| Spring Seat | 316 CRES | AMS 5648 |
| Poppet | A286 CRES | AMS 5737 |
| Spring | Cobalt Alloy | UNS R30003 |
| Seat | Polyimide | - |
This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.
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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.
Always verify flow calculations by experiment.
*There are many parameters to consider when determining V-Factor. Click here for more information.
