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IM 01E20D01-01E
3-7
3. INSTALLATION
(4) Tightening Nuts
Tighten the nuts according to the torque values for
metal piping in Table 3.3.4. For PVC piping, select an
optional code of GA, GC, or GD, use rubber gaskets
and tighten the nuts to the torque values for PVC
piping in Table 3.3.5.
For permeable fluids (such as nitric acid, hydrofluoric
acid, or sodium hydrate at high temperatures), tighten
the nuts according to the torque values in Table 3.3.6.
CAUTION
For a flowmeter with fluorocarbon PFA lining, it
is possible that the nuts may loosen as time
passes, so tighten them regularly. Be sure to
tighten the nuts according to the prescribed
torque values. Tighten them diagonally with the
same torque values, step by step up to the
prescribed torque value.
Figure 3.3.2 Mounting Procedure for Wafer Type (size: 2.5 mm (0.1 in.) to 15 mm (0.5 in.))
Horizontal mounting
F0310b.EPS
Vertical mounting
F0310c.EPS
F0311a.EPS
*
: These items can be ordered optionally.
If they are provided by the user, choose nuts and
bolts in compliance with the flange ratings.
*Nut (eight units)
*Through-bolt (four units)
Centering device (two units)
*Gasket (two units)
Piping-side flange
Mini-flange
Horizontal mounting
F0311b.EPS
Vertical mounting
F0311c.EPS
*Nut (eight units)
*Through-bolt (four units)
*Gasket (two units)
Mini-flange
Centering device (two units)
Piping-side flange
F0310a.EPS
*
: These items can be ordered optionally.
If they are provided by the user, choose nuts and
bolts in compliance with the flange ratings.
Figure 3.3.3 Mounting Procedure for Wafer Type (size: 25 mm (1.0 in.), 32 mm (1.25 in.), and 40 mm (1.5 in.))