Yokogawa ADMAG AXR - Manual (Page 20)

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