Relief valve in filters
Relief valve in filters
(OP)
Hi
I am instaling a new filter in my process (cartdriges filter), but I am not sure if we need to install a relief valve. We will use this filter to remove small particles (solids) from apyrophoric material and this product is moved using cyclohexane or other solvent. Where can I find information related this topic, codes?
Temp max: 80 F, Press max: 40 psig
Thanks for your support
I am instaling a new filter in my process (cartdriges filter), but I am not sure if we need to install a relief valve. We will use this filter to remove small particles (solids) from apyrophoric material and this product is moved using cyclohexane or other solvent. Where can I find information related this topic, codes?
Temp max: 80 F, Press max: 40 psig
Thanks for your support





RE: Relief valve in filters
API 520 AND 521.
REGARDS
RE: Relief valve in filters
If the filter is a pressure vessel (which is likely) then the pressure vessel code requires you to provide a pressure relief valve or other acceptable device (rupture disk, etc). That would be a another good place to review, most PSV vendor's manuals will have exerpts from the Pressure Vessel Code describing the code's requirements.
That said, I've seen filters without PSVs where the only overpressure case was if the filter was blocked while it was full of liquid and subsequently there was a surrounding fire. Several companies will not provide a PSV for this situation as their procedures call for any blocked in equipment to be drained of liquid. No liquid, nothing to vaporize is the argument used. This has been a point of much discussion on this site
RE: Relief valve in filters
good luck!
RE: Relief valve in filters
RE: Relief valve in filters
Therefore,
From my experience I have seen all filters have PSVs (including the spare filters) I think the reason of having PSV in such case is that fire.
I would think there should be PSVs for filters if the code still consider the filter like a vessel.
Please let's know what you have done on this.
Regards