Installation,Operation and Maintenance Manual
Butterfly Valve Type 58 700mm (28”)
9
Fig.7
7)
Tighten up the nuts according the tightening torque values listed
below
Tighten the nuts in a diagonal manner.
All penetrated bolts should be tightened first, and the inserted
metal parts should be tightened after.
Nom. Size
mm (inch)
Bolt tightening torque
N
䡡
m (kgf
䡡
cm)
700 (28”)
130 (1,330)
8)
Using the nylon sling, lift up around the flange sides of both short pipes to set in the required position.
Hook a wire through the eyebolt in order to stabilize the valve.
JIS Standard (10K)
Unit: mm (inch)
Nominal Size
Bolt A
Bolt B
Quantity
mm
(inch)
d
L
S
d1
L1
Bolt A Bolt B
Nut
Washer
700
(28”) M30
320 (12.60”)
66 (2.60”)
M30
105 (4.33”)
20
8
48
48
Notes ; The above figures are bolt size in the case of using the JIS B 2220 "Steel pipe flanges" nominal pressure 10K.
Bolt A
Bolt B
