Norgren VS18 Series Valve Advantage - Manual (Page 28)

VS18/VS26 MAINTENANCE & INSTRUCTION BOOKLET
5.1.11 Replacement of valves
Tools:
VS18 Hexagon wrench key 2.5mm
VS26 Hexagon wrench key 3mm
1. Loosen existing valve mounting screws (two per valve) by turning counter-clockwise and
remove valve vertical to the top.
2. Ensure valve body gasket is fitted on the bottom of the new valve. Place new valve onto the
modular sub-base aligned to the interface. Use plug-in connection as positioning point.
3. VS26 only: Orientate straight flange of the U-washers towards the outer edge of the valve.
4. Tighten valve mounting screws (two per valve) with the specified torque. If you are using a
power screwdriver consider the maximum speed allowed.
Screw Type
(thread) Valve
seize Tightening
torque in Nm Tightening
torque in Ibs Max. screw driver
speed in r.p.m.
12 M3x40 VS18 1.1 – 1.5 9.73 – 13.27 1100
12 M4x42 VS26 1.2 – 1.6 10.62 – 14.16 1100
Note:
To avoid failures and/or use of valves with not allowed specification, you have to make sure that
the voltage of the new valve complies to the old one.
When changing valves or accessories (valve function, sandwich plate, etc.) on a valve island,
the part number on the label will no longer correspond to the configuration. If you order the
valve island based on the Norgren part number, the original configuration will be delivered.
VS2672926-KG00E_05/07 Page 28/97