Norgren VS18 Series Valve Advantage - Manual (Page 89)

VS18/VS26 MAINTENANCE & INSTRUCTION BOOKLET
7. VS26 only: Orientate straight flange of the U-washers towards the outer edge of the valve.
8. Tighten valve mounting screws (two per valve) with the specified torque. If you are using a
power screwdriver consider the maximum speed allowed.
9. Repeat steps 6 and 7 if you expand the valve island with more than one station.
E
D
C
Screw Type
(thread) Valve
seize Tightening
torque in Nm Tightening
torque in Ibs Max. screw driver
speed in r.p.m.
11 M3x10 VS18 0.8 – 0.9 7.08 – 7.96 1100
11 M4x12 VS26 1.0 – 1.1 8.85 – 9.73 1100
12 M3x40 VS18 1.1 – 1.5 9.73 – 13.27 1100
12 M4x42 VS26 1.2 – 1.6 10.62 – 14.16 1100
VS2672926-KG00E_05/07 Page 89/97