Fire-hydrant for use in ground of e.g. industrial plant, has shut-off device having certain zeta value in open position, and flow channel formed from upper part and tapered between upper and lower outlets

摘要

The fire-hydrant has a column (1) provided with a column lower part (1.1) and a column upper part (1.2), where the lower and upper parts form a flow channel. A shut-off device (2) e.g. plug valve, is arranged at a base of the column lower part. A lower outlet is formed from the lower part. An upper outlet is formed from the upper part. The shut-off device has a zeta value of highest 0.1 in an open position. The flow channel formed from the upper part is tapered between the outlets. A design of one of the outlets describes that the flow obtains a radius of curvature (6) during deflection.