8
When mounting the flowmeter, put new gaskets provided in the delivery
package into the companion flanges.
When mounting flanged type flowmeters into the pipeline, bolt
PFC/pipeline mating flanges from the side of the pipeline flanges.
Length of the bolts must provide the minimal distance of 3 mm from a
bolt end to the flowmeter
’s assembly.
To move pipeline flanges apart when installing or removing the
flowmeter (Simulator), it is recommended to use special tool.
Alignment of the pipeline and PFC inner channel is provided when
the PFC flanges are aligned with the companion pipeline flanges.
When mounting the flowmeter into the pipeline, it is required to
install new rubberized asbestos fabric gaskets of appropriate thickness
or several gaskets of greater thickness.
When mounting flowmeters of corrosion-resistant type without the
protection rings into the pipeline, it is required to install new fluoroplastic
gaskets of appropriate thickness or several gaskets of greater
thickness.
CAUTION!
Please make sure that the gaskets are aligned relative
to the PFC inner channel, i.e. a gasket must not even partly cover the
PFC inner channel. To provide alignment of gaskets, it is recommended
to fix the gaskets by adhesive.
The flowmeter is mounted into the pipeline when all construction,
welding and other works are finished.
3.2.6.5. When mounting PFC (Simulator) into the pipeline, tighten nuts in order
specified in Fig.4 by a torque indicating wrench with maximum torque
value that does not exceed the value specified in Table 2.
Exceeding
of torque value may cause damage to PFC followed by leaking
liquid into the flowmeter.
To prevent disbalance and misalignment, it is recommended to
tighten nuts in several steps increasing torque step-by-step up to the
value specified in Table 2 while controlling alignment of the mating
flanges.
Table 2
DN, mm
10
15
20
25
32
40
50
65
80
100
150
200
300
Torque, N
⋅
m
15
15
15
20
25
35
35
40
50
60
80
100
150
Fig.4. Order of tightening flange nuts.
