control valve upsream operating pressure and PCV relationship
control valve upsream operating pressure and PCV relationship
(OP)
Dear Sir
I am sorry to bother your this trivial.
I would like how to set the upstream control valve OP
(Please see the attached excel file)
The control valve TV-B upstream is set 7 barg (refer from CV
datasheet), but from its upsream product cooler datahseet, I only
got 5 barg. It seems quite odd to me, and I wonder how the
temperd water recirculation pump suciton presure 3barg get
involved in this valve upstream pressure 7 barg result.
And why is the PCV byapss the TV-B, how is this PCV function if
TV-B fail, and why is no any block valve upstream / downsream of
this TV-B and PCV?
Thank you so much for your kindly help.
I am sorry to bother your this trivial.
I would like how to set the upstream control valve OP
(Please see the attached excel file)
The control valve TV-B upstream is set 7 barg (refer from CV
datasheet), but from its upsream product cooler datahseet, I only
got 5 barg. It seems quite odd to me, and I wonder how the
temperd water recirculation pump suciton presure 3barg get
involved in this valve upstream pressure 7 barg result.
And why is the PCV byapss the TV-B, how is this PCV function if
TV-B fail, and why is no any block valve upstream / downsream of
this TV-B and PCV?
Thank you so much for your kindly help.





RE: control valve upsream operating pressure and PCV relationship
RE: control valve upsream operating pressure and PCV relationship
Please forgive me because last time I put my words wrong. The PCV upstream pressure should be 7 barg and downstream press should be 2.7 barg. And the TV-A upstream pressure is 5 barg and downstream press is 4.3 barg.
And, I guess that PCV set pressure is 7 barg. If upstream pressure won't pass 7 barg, that PCV will always keep close.
So, could anyone please help me agian why the PCV install in this bypass location for? Cause
the upstream pressure won't pass 7 barg or it may have some abnormal startup or shutdown so that upstream pressure may over 7 barg?
Thank you so much for your kindly help.