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(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.
Horizontal mounting
F0309c.ai
Figure 3.3.2 Mounting Procedure for Wafer Type (size: 50 mm (2 in.) to 200 mm (8.0 in.))
Table 3.3.4
Wafer Type Tightening Torque Values for Metal Piping
Gasket types
within flowtube
Gasket types
for user's flange
Flange ratings
Size
JIS 10K
mm (inch)
45.0 to 56.8
50 (2.0)
{4 58.9 to 579.2}
[398.3 to 502.7]
61.3 to 70.5
65 (2.5)
{625.1 to 718.9}
[542.5 to 624.0]
35.0 to 40.3
80 (3.0)
{356.9 to 410.9}
[309.8 to 356.7]
46.1 to 53
100 (4.0)
{470.1 to 540.5}
[408.0 to 469.1]
85.4 to 98.2
150 (6.0)
{870.8 to 1001}
[755.8 to 869.1]
78.8 to 90.6
200 (8.0)
{803.5 to 923.9}
[697.4 to 801.8]
*Nut
*Through-bolt
Vertical mounting
F0309b.ai
Tightening torque values for PFA lining type
Non-asbestos fiber gasket, PTFE-sheathed non-asbestos gasket
(optional code BSF), or the equivalent in hardness
ANSI Class 150
DIN PN10
45.0 to 56.8
{458.9 to 579.2}
—
[398.3 to 502.7]
61.3 to 70.5
{625.1 to 718.9}
—
[542.5 to 624.0]
76.0 to 80.9
{775.0 to 825.0}
—
[672.6 to 716.0]
46.1 to 53
{470.1 to 540.5}
—
[408.0 to 469.1]
85.4 to 98.2
{870.8 to 1001}
—
[755.8 to 869.1]
113.6 to 135.8
113.6 to 135.8
{1158 to 1385}
{1158 to 1385}
[1005 to 1202]
[1005 to 1202]
<3. INSTALLATION>
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.
Piping-side flange
*Gasket (two units)
*: These items can be ordered optionally.
If they are provided by the user, choose nuts
and bolts in compliance with the flange ratings.
Housing
Mini-
flange
Centering device
(four units)
No gasket (standard)
JIS20K
ANSI Class 300
22.5 to 25.9
22.5 to 25.9
{229.4 to 264.1}
{229.4 to 264.1}
[199.1 to 229.2]
[199.1 to 229.2]
30.8 to 35.4
30.8 to 35.4
{314.1 to 361.0}
{314.1 to 361.0}
[272.6 to 313.3]
[272.6 to 313.3]
39.9 to 45.9
39.9 to 45.9
{406.9 to 468.1}
{406.9 to 468.1}
[353.1 to 406.2]
[353.1 to 406.2]
52.9 to 60.8
52.9 to 60.8
{539.4 to 620.0}
{539.4 to 620.0}
[468.2 to 538.1]
[468.2 to 538.1]
61.0 to 70.2
61.0 to 70.2
{622.0 to 715.8}
{622.0 to 715.8}
[539.9 to 621.3]
[539.9 to 621.3]
87.5 to 100.6
87.5 to 100.6
{892.3 to 1026}
{892.3 to 1026}
[774.4 to 890.3]
[774.4 to 890.3]
F0309a.ai
Unit:
DIN PN16
DIN PN40
50.0 to 57.5
—
{509.9 to 586.3}
[442.5 to 508.9}
56.1 to 70.8
{572.1 to 722.0}
—
[496.5 to 626.6]
39.9 to 45.9
{406.9 to 468.1}
—
{697.5 to 802.5}
[353.1 to 406.2]
[605.4 to 696.5]
52.9 to 60.8
88.6 to 101.9
{539.4 to 620.0}
—
{903.5 to 1039}
[468.2 to 538.1]
[784.1 to 901.9]
91.2 to 96.3
{930.0 to 982.0}
—
{880.0 to 1012}
[807.2 to 852.3]
[763.8 to 878.0]
87.5 to 100.6
{892.3 to 1026}
—
{903.5 to 1039}
[774.4 to 890.3]
[784.1 to 901.9]
IM 01E30D01-01EN
3-8
N-m
{kgf-cm}
[in-lbf]
JIS F12
(JIS 75M)
—
—
68.4 to 78.7
86.3 to 99.2
88.6 to 101.9
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