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Pump running in SF 2010-10-29
10hp down hole centrifugal pump.Set at about 70 feet.Pressure measured and found at center of BEP.Rated flow 90g/min.
Selection of Pump 2010-10-29
For Heater charge , we have two pumps ( Pneumatic and electric diaphragm pumps both are motor driven) .
Looking for confirmation on an NPSH 2010-10-29
A calculation involving a centrifugal pumping from vacuum vessel.Fluid: Water @ 180 DegF.Fluid Density: 0.970
ASTM material spec for PTFE v-ring packing 2010-10-28
I don't think there is an ASME spec for the packing. The pervasive practice in the industry is to call out the spec number from the packing manufacturer used,
Design pump minimum flow line by Relief valve 2010-10-28
For the minimum amount of time that the pump is operating, it would probably be a better to design to omit the relief valve entirely and use a constant recirculation line with an appropriately sized o
Valve Open Area Calc From Thottled Valve Cv 2010-10-28
Cv is proportional to the open area and a disch coeff.the problem with ball valves is that they are classified as high recovery valves. Check Appendix A, Crane Technical Paper 410.
Fixed Roof Tanks 2010-10-28
Distinction if any between Pressure/Vacuum relief Valves and Breather Valves.Breather Valve = Pressure Relief Valve + Vacuum Relief Valve,A Breather valve for a tank requiring IN-breathing and OUT-br
Restricted Orifice- After control valve 2010-10-28
Going through one P&ID of gas processing facility I have been working. What are the reasons behind placing RO-restricted orifice after control valve/valve?
