4.3 Tools and tightening torques
Maintenance–replacing parts
20 EB 8135/8136 EN
Valve nominal size DN 15 to 25
NPS ½ to 1
DN 32 to 50
NPS 1½ to 2
DN 65 to 80
NPS 2½ to 3
Seat wrench
1280-3010 1280-3011 1280-0305
Tool to retain
1280-3059 for washer (12.1) and lock washer (12.2)
Tightening torque (
±
10 %)
Valve seat
120 Nm (M32x1.5) 500 Nm (M58x1.5) 1050 Nm (M90x1.5)
Nut (12)
15 Nm 25 Nm
Body nut (1.1)
10 Nm (M10) 30 Nm (M12) 90 Nm (M16)
Coupling nut (5.1)
80 Nm
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