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Vortex Meter (TRIO-WIRL V) 3 - 6
PN25080
TRIO-WIRL INSTRUCTION MANUAL
centering devices
3.4.2.3 Wafer-Style Installation
The wafer type meter body mounts inside the pipe
flange bolt circle and ranges in size from 1/2 to 8
inches. To assure optimum meter performance, the
meter should be installed in accordance with the
upstream and downstream straight run piping require-
ments given in Figure
. The straight run piping
should be schedule 80 or lighter pipe. Either flat or
raised face flanges may be used.
Remove the shipping covers used to protect the meter
inlet and outlet surfaces from damage during transit
and handling.
WAFER STYLE, SIZES 1 THROUGH 2 INCHES
Optional centering devices, mounting studs and nuts
(Refer to Tables
&
for replacement parts) are
supplied when specified at time of order. The centering
devices have an internal diameter that permits the ring
to be mounted via an undercut face on the inlet and
outlet ends of the meter body. Regardless of whether
the meter will be installed in a horizontal, sloping, or
vertical pipeline, one ring is used at the inlet end and
the other ring at the outlet end of the meter. Use of the
centering devices is illustrated in Figure
. The rings
will have several bolt alignment hole patterns that are
spaced and located on different bolt circle radii. This
permits the centering device for a particular meter size
to be adapted for various flange ratings, e.g., ANSI
Class 150, 300 or 600 lb. flanges. When installing the
centering devices, orient them so that the flange rating
values stamped on the rings will face the meter body,
i.e., markings must be visible. Position the centering
device so that the mounting studs will pass through the
appropriate set of bolt circle radii, as designated
according to the flange rating.
Place the two flange gaskets (supplied) against the
upstream and downstream flange faces (Refer to Table
for replacement flange gaskets). Align the gaskets
holes with the flange bolt pattern. When installing the
flange gaskets, use care to assure that the gaskets fit
properly and do not project into the pipe line causing an
alteration of the flow profile. A change in flow profile
can adversely affect meter accuracy.
Install the meter in the pipeline, between the inlet and
outlet gaskets. Make certain that the flow direction
arrow on the meter body is oriented in accordance with
the process flow. If the meter is installed in a horizontal
pipeline, insert two studs in the bottom two flange holes
to support the meter. When installing the meter in a
vertical pipe run, some temporary support may be
required until mounting studs and nuts have been
installed.
FIGURE 3-4 METER PIPING REQUIREMENTS