Installation, Operation and Maintenance Manual
Butterfly Valves Type 75, 75D Electric Actuated Type S 9
Torque wrench Spanner wrench
Bolt, Nut, Washer (For many flanges specification)
* Gasket is not necessary. (Seat [3] of valve serves as the part of gasket.)
1) Leave the disc [2] slightly opened by lever handle.
* Don’t turn the disc beyond the seat.
(Otherwise, the disc may be damaged.)
2) Set the valve between the coupled flanges.
3) Insert washers and bolts from the pipe side, insert washers and nuts
from the valve side, then temporarily tighten them by hand.
4) Using a torque wrench, tighten the bolts and nuts gradually to the
specified torque in a diagonal manner
(Refer to fig.1.)
- Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal manner.
Recommended torque value Unit Nmkgfcm[lbinch]
Nom. Size 450mm
500, 600mm
(20”, 24”)
Torque value
JIS Standard (10K)
Body material: PP, PVDF, PDCPD
Nominal Size
mm (inch)
Bolt A Bolt B Quantity
D L S D1 L1 Bolt A Bolt B
Nut &
Wa sh e r
450 (18”)
more than
310mm (12.20”) 65mm
(2.56”) M24 more than
120mm (4.72”) 16
500 (20”) more than
320mm (12.60”)
600 (24”) M30 more than
350mm (13.78”)
(2.95”) M30 more than
140mm (5.51”) 20 48
Necessary items
Fig. 1
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