Installation, Operation and Maintenance Manual
Butterfly Valve Type 55Type 55IS Pneumatic Actuated Type TA
12
- Tighten the bolts and nuts gradually with a torque wrench to the
specified torque level in a diagonal manner.
- When you insert a valve between flanges, please insert after extending the fields of flanges fully.
(If you insert a valve by force without fully extending fields of flanges, a liner may be turned over
and suffer a crack.)
Recommended torque value Unit Nmkgfcm󲽚[lbinch]
Nom. Size
50, 65mm
(2”, 2 1/2”)
80, 100mm
(3, 4”)
125, 150mm
(5, 6”)
200, 250mm
(8”, 10”)
Torque value
Type55
22.5
{230}
[200]
30.0
{306}
[266]
40.0
{408}
[355]
55.0
{561}
[488]
Nom. Size
50-100mm
(2”- 4”)
125, 150mm
(5, 6”)
200, 250mm
(8”, 10”)
300,350mm
(12,14”)
400mm
(16”)
Torque value
Type55IS
30.0
{306}
[266]
40.0
{408}
[355]
55.0
{561}
[488]
60.0
{612}
[532]
80.0
{816}
[710]
<JIS 10K Standard>
Dimension of bolt length
Nom. Size
Bolt (Minimum)
d
Type 55
Type 55IS
mm
inch
L
S
L(mm)
S(mm)
Bolt
Nut & Washer
50
2”
M16
130mm (5.11”)
35mm (1.38”)
130mm (5.11”)
35mm (1.38”)
4
8
65
2 1/2
135mm (5.31”)
80
3”
140mm (5.51”)
8
16
100
4”
145mm (5.71”)
140mm (5.51”)
125
5”
M20
165mm (6.50”)
40mm (1.57”)
160mm (6.30”)
40mm (1.57”)
150
6”
180mm (7.18”)
200
8”
195mm (7.68”)
165mm (6.50”)
12
24
250
10
M22
215mm (8.46”)
180mm (7.10”)
45mm (1.77”)
300
12
190mm (7.50”)
16
24
350
14
210mm (8.25”)
400
16
M24
230mm (9.10”)
50mm (2.00”)
* Flange thickness are according to JIS B2220.
* When installing AV gasket, add 5 mm(0.2”).
Caution
Fig. 1
Caution
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