2 phase flow pressure drop calc for check valve

[smh345]

I need to calculate the pressure drop for a 2 phase flow application for a check valve. I would normally calculate the combined density and calculate pressure drop based on total combined flow. Are there any other practical and simple ways to accuratly calculate the pressure drop?

 

[zdas04]

What kind of conditions? I've put dP gauges across a bunch of check valves in pretty rough conditions and the dP (after lift) is always too close to zero to be read on a +/- 5 psid gauge. I'd use the k-value from Crane 410 (i.e., either 50 f(t) or 100 f(t)) and convert it to a length of straight pipe.

David Simpson, PE
MuleShoe Engineering

http://www.muleshoe-eng.com