ONICON F-2600 - Manual (Page 24)

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F-2600 & F-2700 Vortex Flow Meter Manual 02/15 - 0808-7 / 19204 Page 24
2.3 F-2700 SERIES INSERTION FLOW METER INSTALLATION
Prepare the pipeline for installation using either a standard or hot tap method described on the
following pages. Refer to a standard code for all pipe tapping operations. The following tapping
instructions are general in nature and intended for guideline purposes only. Before installing the
meter, review the mounting position and isolation value requirements given below.
Mounting Position
Allow clearance between the electronics enclosure top and any other obstruction when the meter
is fully retracted.
Isolation Valve Selection
Always install an isolation valve with insertion style meters. If you supply the isolation valve, it
must meet the following requirements:
1. A minimum valve bore diameter of 1.875" is required, and the valve’s body size should be 2".
Normally, gate valves are used.
2. Verify that the valve’s body and flange
rating are within the flow meter’s maximum operating pressure and temperature.
3. Choose an isolation valve with at least two inches existing between the flange face and the
gate portion of the valve. This ensures that the flow meter’s sensor head will not interfere with
the operation of the isolation valve.
Figure 8. Isolation Valve Requirements