
D-1401 & D-1402 Portable Metering System Installation and Operation Guide • 03-17
11
3.2
M ECHANI CAL I NSTALLATI ON
To take advantage of the ONICON Flow Meter’ s built-in Hot Tap feature, it must be installed
through an isolation valve. The location must allow sufficient overhead clearance for meter
removal.
IMPORTANT! A full 1” opening is required to clear the turbine assembly. Make sure that your
valves and fittings are full port and at least 1” in actual internal diameter. Also, note that an
oversized access hole can cause undesirable turbulence.