Stem Packing for high pressure / temperature
Stem Packing for high pressure / temperature
(OP)
Hi,
I'm in process of designing a valve for a steam / condensate application 250 barg pressure and 525°C temperature. In order to select suitable stem packings, I need to explore different seal / packing options that provide reliable sealing (Class VI Leakproofness).
I know graphite (with SS reinforcement) packings work well for such applications but I do not have any design guidelines for the same. Can anyone help on this?
O rings provide reliable radial seals but at much lower working temeparatures (max upto 250/260°C or so).
Any other options possible?
Thank in advance.
I'm in process of designing a valve for a steam / condensate application 250 barg pressure and 525°C temperature. In order to select suitable stem packings, I need to explore different seal / packing options that provide reliable sealing (Class VI Leakproofness).
I know graphite (with SS reinforcement) packings work well for such applications but I do not have any design guidelines for the same. Can anyone help on this?
O rings provide reliable radial seals but at much lower working temeparatures (max upto 250/260°C or so).
Any other options possible?
Thank in advance.





RE: Stem Packing for high pressure / temperature
In some case you can use metallic seal. It depends on how the stem move