Yokogawa ADMAG AXW - Manual (Page 14)

<3. INSTALLATION>
3-5
IM 01E25D11-01EN
(2) Carrying Flowtube
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90 degrees or less
90 degrees or less
Eye bolt Eye plate
Figure 3.3.1 Carrying Flowtube
CAUTION
• When carrying the flowtube, use the lifting
rings (eye bolts or eye plates).
• To assure safety, keep lifting angle less than
90 degrees as shown in Figure 3.3.1
(3) Positioning Flowtube
Bring in the flowtube, place it and use a jack to
adjust its position.
IMPORTANT
Apply the jack to the flanges of the flowtube.
In addition, adjust any misalignment when the
flowtube is brought in, as the jack can adjust
vertical position, but not horizontal one.
(4) Applying Gasket and optional Grounding
Rings
Gasket:
Necessary gaskets for piping connection are
as below depending on the choice of grounding
rings.
Use sheet gaskets designed to fit for flange
standard. The GF type-1 gaskets by JIS G
3443-2 should be used for the JIS F12 flange
models in sizes 1100 mm (44 in.) and above. In
this case, the gasket groove is required on the
customer pipe flanges.
The thickness of gasket should be 2mm
(0.08in.) to 5mm (0.2in.) for sizes up to 1000
mm (40 in.), and 5 mm (0.2 in.) or more
for larger sizes. The type of gasket should
be a kind of soft rubber, or its equivalent in
hardness.
1. Standard (no grounding rings)
Gaskets A supplied by customer
Customer
pipe
Customer
pipe
A A
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Figure 3.3.2 Installation without Grounding
Rings
When using the GF type-1 gaskets, the
gasket groove is required as mentioned
above.
2. With optional grounding rings (code GR1)
Optional grounding rings
Gaskets A and B supplied by customer
Customer
pipe
Customer
pipe
A B B A
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Figure 3.3.3 Installation with Grounding Rings
GR1
It is recommended to use the same gasket
for A and B. Both gaskets A and B are to be
supplied by customer.
When polyurethane or natural soft rubber
lining, the gaskets B are not necessary.
3. With optional grounding rings (code GR2)
Customer
pipe
Optional grounding rings
with integrated gaskets B included
Gaskets A supplied by customer
Customer
pipe
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A A
B B
Figure 3.3.4 Installation with Grounding Rings
GR2
This is available for the models with
process connection JIS F12 (JIS 75M) in
sizes 1100 mm (44 in.) and above. Only
gaskets A are to be supplied by customer.
The grounding rings are installed and
locked onto the flowtube with gaskets B
when shipped from factory.
Mounting Procedure (no Grounding Rings):
Connect the flowtube’s flange and the
customer’s pipe which contact process fluid by
some wire supplied by customer.