Following on from the lengthy thread about Sizing Breather Valves........
ASSUMING I have identified all the possible relief scenarios and decided which is my 'worst case' and then designed a relief area accordingly.....
Can a breather valve (pressure/vac or compensation valve whatever you will) be used alone to act as the relief device?
Thanks in advance
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Breather Valves As Relief Devices
Started by JEBradley, Sep 10 2008 11:05 AM
3 replies to this topic
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#1
Posted 10 September 2008 - 11:05 AM
#2
Posted 10 September 2008 - 12:00 PM
JE:
Yes, it can.
Yes, it can.
#3
Posted 11 September 2008 - 09:05 AM
QUOTE (JEBradley @ Sep 10 2008, 08:05 AM) <{POST_SNAPBACK}>
Can a breather valve be used alone to act as the relief device?
JE,
Perhaps the question should have been worded using "should" rather than "can". I assume you are refering to a "conservation vent" valve as your "breather valve". I almost always see tanks with conservation vents also having "emergency vent" valves or other alternatives for venting of gases/vapors from the tank. I believe Art is right in stating that this is not an absolute requirement, but I also feel that it is a very prudent step to take. Too much is at stake to rely on a single mechanical device (my opinion only).
#4
Posted 11 September 2008 - 11:23 PM
QUOTE (djack77494 @ Sep 11 2008, 09:05 AM) <{POST_SNAPBACK}>
QUOTE (JEBradley @ Sep 10 2008, 08:05 AM) <{POST_SNAPBACK}>
Can a breather valve be used alone to act as the relief device?
JE,
Perhaps the question should have been worded using "should" rather than "can". I assume you are refering to a "conservation vent" valve as your "breather valve". I almost always see tanks with conservation vents also having "emergency vent" valves or other alternatives for venting of gases/vapors from the tank. I believe Art is right in stating that this is not an absolute requirement, but I also feel that it is a very prudent step to take. Too much is at stake to rely on a single mechanical device (my opinion only).
Dear JE Hello/Good Morning,
May I add that wherever such Pressure/Vaccume Valves (i.e.Breathing) devices installed on storage tanks also have flame arrestors; then some paticulates/sticky materials from
Hope this helps;although principally Art is right, but Doug has pointed out noteworthy suggestion to include in any evaluation for design/installation.
Best Regards
Qalander
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