API 2000 discharge coefficients for preliminary psv sizing
API 2000 discharge coefficients for preliminary psv sizing
(OP)
What discharge coefficients are recommended for low pressure tank PSVs when designed to API 2000?
This is for preliminary sizing. Service is gas. For API 520 I'd use 0.975 but not sure this applies to an API 2000 psv.
Thanks.
This is for preliminary sizing. Service is gas. For API 520 I'd use 0.975 but not sure this applies to an API 2000 psv.
Thanks.





RE: API 2000 discharge coefficients for preliminary psv sizing
RE: API 2000 discharge coefficients for preliminary psv sizing
Nowadays, in the 6th Ed. (Nov. 2009) of API 2000 I glanced at, they show a graph of discharge coefficient (Y) versus absolute pressure ratio (X) of inlet P / outlet P. For X from 0.5 to 1.0, Y ranges from 0.825 to 0.65, respectively. This is from the curved labeled valve discharge coefficient for published capacity.
Good luck,
Latexman
To a ChE, the glass is always full - 1/2 air and 1/2 water.