
11451 Belcher Road South, Largo FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
F-1500 Turbine Flow Meter Manual 02/18 - 1018-6 / 35726
Page 14
2.2.2 Hot Tap Guidelines
Refer to a standard code for all pipe tapping operations. The following tapping instructions
are general in nature and intended as a guideline only.
1. Confirm that the installation site meets the minimum upstream and downstream pipe
diameter requirements.
2. Weld a 2” mounting adapter on the pipe. Make sure the mounting adapter is within ± 5°
perpendicular to the pipe center line (see previous page). The pipe opening must be at
least 1.875” in diameter.
3. Connect a 2” process connection on the mounting adapter.
4. Connect an isolation valve on the process connection. The valve’s full open bore must be
at least 1.875” in diameter.
5. Run a static pressure check on the welds. If pressure loss or leaks are detected, repair the
joint and re-test.
6. Connect the hot tapping equipment to the isolation valve, open the isolation valve and
drill at least a 1.875” diameter hole.
7. Retract the drill, close the isolation valve, and remove the hot tapping equipment.
8. The first time the sensor is installed, install the check-disc tool on the flow meter rather
than the rotor.
9. Open the isolation valve and insert the check-disc tool. After successful insertion, retract
the sensor, close the isolation valve and remove the flow meter.
10. Install the rotor, connect the flow meter to the isolation valve and open the isolation valve.
11. Calculate the sensor probe insertion depth and insert the sensor probe into the pipe as
described on the following pages.
WARNING
Hot tapping must be performed by a trained professional. US regulations often require
a hot tap permit. The manufacturer of the hot tap equipment and/or the contractor
performing the hot tap is responsible for providing proof of such a permit.
!
WARNING
All flow meter connections, isolation valves, and fittings for hot tapping must have the
same or higher pressure rating as the main pipeline.
!
Figure 2. Hot Tap Sequence