Installation Operation and Maintenance Manual
W
Recommended torque value
Unit: N-m
䡗
kgf-cm
䡙
[lb-inch]
Nom. Size
1.5” (40 mm)
2” (50 mm)
3”, 4” (80, 100 mm)
Torque value
20.0 {204} [177]
22.5 {230} [200]
30.0 {306} [266]
Nom. Size
6” (150 mm)
8”, 10” (200, 250 mm)
12” (300 mm)
Torque value
40.0 {408} [355]
55.0 {561} [488]
60.0 {612} [532]
Caution:
Avoid excessive tightening. (The valve can be damaged.)
FYBROC
®
NM WSB SERIES VALVES
INSTALLATION OPERATION AND MAINTENANCE MANUAL
9
Fybroc
®
Wafer Style Butterfly Valves 1.5
”
– 12
”
(40 – 300 mm)