Figure 3-5 Wafer Process Connections, Sizes 1/2 Through 2 Inches - ABB TRIO-WIRL ST4000 Instruction Manual

Install the remaining mounting studs, as required.
Studs and nuts should be lubricated with a graphite
based lubricant. Assemble a nut on each end of the
mounting studs hand tight. Tighten the stud nuts in a

FIGURE 3-5 WAFER PROCESS CONNECTIONS, SIZES 1/2 THROUGH 2 INCHES

WAFER STYLE, SIZES 3 THROUGH 8 INCHES
Place the two flange gaskets (supplied) against the
upstream and downstream flange faces (Refer to Table
7-5 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.
Optional centering sleeves (spacers), mounting studs
and nuts are supplied (Refer to Tables
replacement parts) when specified at time of order.
Placement of the sleeves is dependent on the type of
installation (vertical/horizontal/sloping). If the meter is
installed in a vertical pipeline, select four equally
spaced bolt holes for placement of the four sleeves and
studs (refer to Figure 3-6). If the meter is installed in a
PN25080
TRIO-WIRL INSTRUCTION MANUAL
diagonally opposite pattern, as shown in Figure 3-8, to
equalize pressure on the meter face. Nut torque should
be limited to that which will provide a leakproof seal.
horizontal or sloping pipeline, select the bottom two
holes of the flanges on each end of the meter for place-
ment of the four sleeves and studs.
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. In horizontal pipe runs the meter will
be supported by the upstream and downstream
sleeves. When installing the meter in a vertical pipe
run, some temporary support may be required until
mounting studs and nuts have been installed.
7-3 & 7-4 for
Install the remaining mounting studs, as required.
Studs and nuts should be lubricated with a graphite
based lubricant. Place a hex nut on each end of the
mounting stud. Tighten the stud nuts in a diagonally
opposite pattern, as shown in Figure 3-8, to equalize
pressure on the meter face. Nut torque should be lim-
ited to that which will provide a leakproof seal.
Vortex Meter (TRIO-WIRL V) 3 - 7