The VNA series is a universal 2 port valve used for controlling pneumatic systems or air-hydro circuits. Its balanced poppet design permits normal and reverse flow application.
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In the case of liquid: P Q = 1.9 x 106Av (9) G Q : Flow rate [l/min] Av : Flow coefficient [m2] P : Pressure difference [MPa] G : Relative density [water = 1] In the case of saturated aqueous vapor: Q = 8.3 x 106Av P(P2 + 0.1) (10) Q : Flow rate [m3/s] Av : Flow coefficient [m2] P : Pressure difference [Pa] P1 : Relative density [MPa]: P = P1 P2 P2 : Relative density [MPa] Front matter 4