The Kennison Nozzle is utilized to measure the flow
of fluids in a partially filled pipe. The nozzle shape allows
measurement of low flow rates and over a wide flow rate range.
Aw well it allows measurement of fluid streams with solids and
debris such as storm drains and raw sewage. The Kennison nozzle
is ideal for measurement of flows into open manholes or open flows
into tanks. Nozzles are available in standard sizes 6” to
24” and special sizes up to 48” in inlet diameter.
HERE to view PDF