ASAHI AV VALVES Installation, Operation and Maintenance Manual
Butterfly Valve Type 57, 56, 56D Electric Actuated Type S 13
- Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal manner.
Recommended torque value Unit Nm kgfcm󲽚 [lbinch]
Nom. Size 40mm
(1 1/2”)
50, 65mm
(2”,2 1/2”)
80, 100 mm
(3”,4”)
Torque value
20.0
{204}
[177]
22.5
{230}
[200]
30.0
{306}
[266]
Nom. Size 125, 150 mm
(6”,8”)
200, 250 mm
(10”,12”)
300, 350 mm
(12”,14”)
400 mm
(16”)
Torque value
40.0
{408}
[355]
55.0
{561}
[488]
60.0
{612}
[532]
80.0
{816}
[710]
Dimension of insert bolt A and B
JIS Standard (10K)
Body material: U-PVC, PP, PVDF, PDCPD
Nominal Size
mm (inch)
Bolt A Bolt B Quantity
D L S D1 L1 Bolt A Bolt B
Nut &
Washer
40 (1 1/2”)
M16
more than
115mm (4.53”) 40mm
(1.57”)
- -
4
-
8
50 (2”) more than
125mm (4.92”)
65 (2 1/2”) more than
135mm (5.31”)
45mm
(1.77”)
80 (3”) more than
135mm (5.31”)
8 16
100 (4”) more than
145mm (5.71)
125 (5”)
M20
more than
165mm (6.50”)
50mm
(2”)
150 (6”) more than
175mm (6.89”) 55mm
(2.17”)
200 (8”) more than
195mm (7.68”) 12 24
250 (10”)
M22
more than
225mm (8.86”) 60mm
(2.36”)
300 (12”) more than
245mm (9.65”) 16 32
350 (14”) more than
255mm (10.04”)
65mm
(2.56”)
400 (16”) M24 more than
290mm (11.42”)
60mm
(2.36”) M24 120mm
(4.72”) 14 4 32
*Body material U-PVC is available to nominal size 40-350mm (1 1/2”-14”) only.
*Body material PDCPD is available to nominal size 400mm (16”) only.
Bolt A Bolt B
Fig. 1
Caution
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