YOKOGAWA AXFA14C - Page 27

5) Conrmationofadaptermountingscrew
Afterinstallationofthemagneticowmeter,be
sure to retighten the adapter mounting screw
according to Table 3.3.18 or Table 3.3.19.
Besuretoconrmthatleakagefromadapter
connectionpointdoesnotoccurbyllingthepipe
oftheowtubewithuid.
NOTE
The sleeve, nut, and gasket are not provided with the
owmeter,andmustbeprovidedbytheuser.
Gasket
Sleeve
Adapter for union connection
Nut
F0320.ai
Adapter mounting screw
Figure 3.3.7 Mounting Procedure for Union Connection
Type
(c) Butt weld adapter type
(process connection codes: KDB and KKB)
1) Removing adapter
Remove the butt weld adapter by loosening the
mounting screws.
2) Welding ferrule or sleeve
Weld a ferrule, a sleeve, or an alternative
(provided by the user) to the butt weld adapter.
IMPORTANT
• Be sure to weld the ferrule, the sleeve, or the
alternative after removing the butt weld adapter
fromtheowmeteritself.
• When welding the ferrule, the sleeve, or the
alternative, pay attention to the edge preparation,
level differences between them and the piping, and
the welding current to avoid deforming the piping
orcausingstagnationportionoftheuid.
3) Installing butt weld adapter
Installagaskettotinthegrooveofthebuttweld
adapter, and tighten the mounting screws.
CAUTION
• In case of standard gasket (EPDM rubber), tighten
the adapter mounting screw according to the
torque values in Table 3.3.18.
• In case that optional code GH (Silicon rubber)
is selected, tighten the adapter mounting screw
according to the torque values in Table 3.3.19.
• Tighten the adapter mounting screw in diagonal
order step by step.
• Aftertighteningofscrew,conrmthatgaskets
protrude inside adapter. Protruding of gasket is
necessary to keep the sanitary requirements.
Table 3.3.18 Tightening Torque Values of adapter for EPDM
rubber gasket
Tightening torque values (N-m / {kgf-cm} / [in-lbf])
Gasket
typeSize
mm (inch)
EPDM rubber (standard)
15 (0.5), 25 (1.0),
32 (1.25), 40 (1.5)
3.0 to 3.5 / {30.59 to 35.69} / [26.55 to 30.98]
50 (2.0), 65 (2.5) 4.5 to 5.0 / {45.89 to 50.99} / [39.83 to 44.25]
80 (3.0) 8.0 to 9.0 / {81.58 to 91.78} / [70.81 to 79.65]
100 (4.0), 125 (5.0) 10 to 11 / {102.0 to 112.2} / [88.50 to 97.35]
Table 3.3.19 Tightening Torque Values of adapter for
silicon rubber gasket
Tightening torque values (N-m / {kgf-cm} / [in-lbf])
Gasket
typeSize
mm (inch)
Silicon rubber (optional code GH)
15 (0.5), 25 (1.0),
32 (1.25), 40 (1.5)
2.0 to 2.5 / {20.39 to 25.49} / [17.70 to 22.13]
50 (2.0), 65 (2.5), 80 (3.0) 4.0 to 4.5 / {40.79 to 45.89} / [35.40 to 39.83]
100 (4.0), 125 (5.0) 6.0 to 6.5 / {61.18 to 66.28} / [53.10 to 57.53]
4) Mountingowmetertopiping
Connecttheowmetertothepipinginamanner
appropriate to the ferrule, the sleeve, or the
alternative that has been welded to the adapter.
5) Conrmationofadaptermountingscrew
Afterinstallationofthemagneticowmeter,be
sure to retighten the adapter mounting screw
according to Table 3.3.18 or Table 3.3.19.
Besuretoconrmthatleakagefromadapter
connectionpointdoesnotoccurbyllingthepipe
oftheowtubewithuid
F0321.ai
Gasket
Butt weld adapter
Adapter
mounting screw
Mini-flange
Figure 3.3.8 Mounting Procedure for Weld Joint Adapter
Type
<3. Installation>
26
IM 01E20A01-01EN