Venturi Tubes are differential pressure flow measurement devices particularly designed to measure non-viscous, clean liquids and gases. The prominent features of Venturi tubes include maximum pressure recovery, minimal upstream and downstream pipe length requirement. Tek-DP 1640A Venturi Tubes are available in various models for normal liquid applications and wet gas applications. Tek-DP 1640A series Venturi Tubes provide consistent accuracy, maximum pressure recovery and sustained performance for various applications where permanent pressure loss is intolerable