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F-1500 Turbine Flow Meter Manual 02/18 - 1018-6 / 35726
Page 12
2.2 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.
1.875-inch min.
valve bore
2-inch min.
2-inch
valve size
Isolation Valve Requirements
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. 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 1. Isolation Valve Requirements
Minimum Required
Upstream Diameters
Minimum Required
Downstream Diameters
No Flow
Straightener
With Flow Straightener
No Flow
Straightener
With Flow
Straightener
Example
A
A
C
C’
B
B
1
10 D
N/A
N/A
N/A
5 D
5 D
2
15 D
10 D
8 D
2 D
5 D
5 D
3
30 D
15 D
13 D
2 D
5 D
5 D
4
10 D
N/A
N/A
N/A
5 D
5 D
5
20 D
10 D
8 D
2 D
5 D
5 D
6
50 D
25 D
23 D
2 D
5 D
5 D
D = Internal diameter of channel.
Flow
straightener
(if used)
Flow straightener
(if used)
Flow straightener
(if used)
Flow straightener (if used)
Flow
straightener
(if used)