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3.3.4 Gaskets Size
Be sure to choose a gasket with an inner and outer
diameter that does not protrude inside the piping.
If the inner diameter of the gasket is too large,
or outer diameter of the gasket is too small, fluid
leakage may result.
Table 3.3.12 Inner Diameters of Grounding Ring,
Outer Diameter for Effective Sealing,
Recommended Inner Diameter of
Gasket
Lay length code 1;
Outer
Inner
Size
Diameter
Diameter of
Grounding
Effective
Ring
Sealing
[øA]
[øB]
25 (1.0)
28 (1.10)
53 (2.09)
40 (1.5)
41 (1.61)
71 (2.80)
50 (2.0)
53 (2.09)
84 (3.31)
65 (2.5)
66 (2.60)
103 (4.06)
80 (3.0)
77 (3.03)
114 (4.49)
100 (4.0)
102 (4.02)
140 (5.51)
150 (6.0) 146.1 (5.75)
190 (7.48)
200 (8.0) 193.6 (7.62)
240 (9.45)
Unit: mm (in.)
PFA lining
Wafer, Flange
Recommended Inner
Diameter of Gasket
PTFE-
for
sheathed
Flat
Non-
Gasket
asbestos
[øC]
Gasket
[øD]
35 (1.38)
49 (1.93)
61 (2.40)
84 (3.31)
90 (3.54)
115 (4.53)
167 (6.57)
218 (8.58)
<3. INSTALLATION>
Lay length code 2;
Outer
Inner
Size
Diameter
Diameter of
Grounding
Effective
Ring
Sealing
[øA]
[øB]
25 (1.0)
28 (1.10)
53 (2.09)
40 (1.5)
41 (1.61)
71 (2.80)
50 (2.0)
53 (2.09)
84 (3.31)
65 (2.5)
66 (2.60)
103 (4.06)
80 (3.0)
77 (3.03)
114 (4.49)
100 (4.0)
102 (4.02)
140 (5.51)
150 (6.0) 140.7 (5.54)
190 (7.48)
200 (8.0) 188.9 (7.44)
240 (9.45)
Size of Inner Diameter of Grounding Ring,
Outer Diameter for Effective Sealing and
Recommended Inner Diameter of Gasket:
øD
*1
øC
øA
PTFE-sheathed Non-asbestos Gasket
*1: Do not have this length be smaller than the
inner diameter of grounding ring (øA).
3-13
Unit: mm (in.)
PFA lining
Wafer
Recommended Inner
Diameter of Gasket
PTFE-
for
sheathed
Flat
Non-
Gasket
asbestos
[øC]
Gasket
[øD]
35 (1.38)
49 (1.93)
61 (2.40)
84 (3.31)
90 (3.54)
115 (4.53)
167 (6.57)
218 (8.58)
AXR
øB
Flowtube
Lining
Grounding Ring
Flat Gasket
F0311.ai
IM 01E30D01-01EN
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