- #1
karenbob
- 1
- 0
Looking for some help in understanding what may be causing pressure/flow fluctations on a nozzle.
Details: The nozzle is basically a 1/4" tube about 3/4" long with one end capped. About 1/4' from the capped end are two orifices 180 degrees apart. The open end of the tube is subjected to calibrating fluid at 49 PSI. Flow from the orfices measures about 2.00 lbs/minute from each orifice. Fluid is at 85 degrees F.
Issue: Some nozzles exhibit a pressure fluctuation of about +/- 2 psi. This occurs at a rate of about 3 times per second. Flow is affected in the same way. Some nozzles exhibit this while others exhibit a contant flow and pressure. This is repeatable. Plumbing, pumps, etc. have been changed with not effect. We do not see anything different between the two types of nozzles.
Any thoughts as to the cause of this phenomina is appreciated
Details: The nozzle is basically a 1/4" tube about 3/4" long with one end capped. About 1/4' from the capped end are two orifices 180 degrees apart. The open end of the tube is subjected to calibrating fluid at 49 PSI. Flow from the orfices measures about 2.00 lbs/minute from each orifice. Fluid is at 85 degrees F.
Issue: Some nozzles exhibit a pressure fluctuation of about +/- 2 psi. This occurs at a rate of about 3 times per second. Flow is affected in the same way. Some nozzles exhibit this while others exhibit a contant flow and pressure. This is repeatable. Plumbing, pumps, etc. have been changed with not effect. We do not see anything different between the two types of nozzles.
Any thoughts as to the cause of this phenomina is appreciated