tray_performance_data — record id valve_isobutane_nbutane_4ft_24in_165psia_14p7pct_ref12 · system description Valve, isobutane-n-butane, 4.0 ft dia, 24 in spacing, 165 psia, 14.7 pct hole… · value typical 116 · value max 123 · value min 110 | Distillation Tray Efficiency | Engineering Database