centrifugal compressor primary vent
centrifugal compressor primary vent
(OP)
Hi, I am curious to know why at centrifugal compressor primary vents, there are sometimes orifice and sometimes needle valves designed ?
During commissioning, these orifice had to be adjusted to get the values obtained during the factory acceptance test.
Hope somebody can clear my confusion as many so called experts told me its for suppliers to make money , save production cost etc ...
Surely these are design to a certain logical guideline or standard.
Thanks in advance for contributors.
During commissioning, these orifice had to be adjusted to get the values obtained during the factory acceptance test.
Hope somebody can clear my confusion as many so called experts told me its for suppliers to make money , save production cost etc ...
Surely these are design to a certain logical guideline or standard.
Thanks in advance for contributors.





RE: centrifugal compressor primary vent
RE: centrifugal compressor primary vent
The 2nd arrangement is the typical standard arrangement.
In many compressors, suction pressure will vary somewhat , and will go even higher on compressor shutdown and settleout. Seal gas flow should be maintained constant for all these variations.
RE: centrifugal compressor primary vent