Operational Characterization of Pressure Regulating Valves

Figure 5

Boxplots presenting values of hysteresis for each model of PRV over the five flow rates evaluated: (a) 0.57 m³ h⁻¹; (b) 1.13 m³ h⁻¹; (c) 2.26 m³ h⁻¹; (d) 3.00 m³ h⁻¹; (e) 3.60 m³ h⁻¹ (10 PSI) or 4.00 m³ h⁻¹ (15 PSI and 20 PSI).