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The MINIVALVE® trays produce reduced entrainment and better efficiency than conventional valve tray design and sieve trays. The improvement in capacity can exceed 13% in spray regime services with low-to-moderate weir loadings. MINIVALVE valves exhibit a more uniform froth action on the tray deck compared to full-size valves. They are offered in both fixed (VG-0) and movable (MV-1) styles. 

MINIVALVE valves are directional with the rear leg being a little wider than the downstream front leg. This gives a slight pushing action to the liquid as vapor passes through the valves. The liquid push assists in maintaining a more uniform flow pattern on cross-flow trays with less retrograde action. It also helps offset vapor cross-flow channeling effects to a small degree.