Dear allI came across many of the systems having rupture disc in the upstream of safety valve.Could anybody please explain me the purpose of rupture disc on the downstream of pressure safety valve. When this combination to be used? and if at all to use this then what will be the set pressure of the disc downstream?Thank you for reviewing.Regards Pradip

Please check Phil Leckners excellent series on rupture disks: http://www.cheresources.com/asiseeit3.shtml
http://www.cheresources.com/asiseeit7.shtml

Thanks for that plug "gvdlans".

A rupture disk might be used downstream of a relief valve if you are concerned about vapors (or liquid for that mater) backing up into the tail pipe and affecting the integrity of the PSV.

As far as the bursting pressure goes, it can basically be anything that won't adversely affect the PSV. See my articles.

Thank you Mr. gvdlans and Mr. pleckner for reviewing and replying for my querry. I am going through your articles on the rupture disc and finding it very useful.

Regards
kpa



uote name='pleckner' date='May 16 2006, 12:05 PM' post='6524']
Thanks for that plug "gvdlans".

A rupture disk might be used downstream of a relief valve if you are concerned about vapors (or liquid for that mater) backing up into the tail pipe and affecting the integrity of the PSV.

As far as the bursting pressure goes, it can basically be anything that won't adversely affect the PSV. See my articles.
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