Operational Characterization of Pressure Regulating Valves

Table 1

Results from the regulation uniformity test operated under the reference flow velocity of 1 m s⁻¹.

Parameter	PRV model
	10 PSI	15 PSI	20 PSI
Declared preset pressure (kPa)	68.65	102.97	138.27
Mean regulated pressure (kPa)	60.80	103.95	134.35
Standard deviation of the regulated pressures (kPa)	2.128	2.001	3.579
Coefficient of variation (%)	3.5	1.9	2.7
Deviation between the mean regulated pressure and the declared preset pressure (%)	11.5	0.7	2.3