Norgren VS18 Series Valve Advantage - Manual (Page 29)

VS18/VS26 MAINTENANCE & INSTRUCTION BOOKLET
5.1.12 Replacement of pilot valves
Tool:
VS18/VS26: Socket screw key X10
1. Loosen existing pilot valve screws (two per
pilot valve) by turning counter-clockwise.
2. Important: Check and keep in mind the
position of the gasket (A) between valve
body and pilot valve (internal or external pilot
air supply) to make sure placing the new
gasket is set for the appropriate pilot type.
3. Remove pilot valve, V-ring (B) and gasket
(A).
4. Place new V-ring (B) and new gasket (A).
Consider now the position of the gasket (A)
(internal or external pilot air supply).
Screw Type
(thread) Valve
seize Tightening
torque in Nm Tightening
torque in Ibs
22 M3x24 VS18/
VS26 0.9 – 1.0 7.96 – 8.85
5. Place new pilot valve. Important: Turn new
thread moulded pilot valve screws (two per
pilot valve) by hand in the existing threads for
safe seizing to avoid damaging the existing
thread. Tighten the screws then with the
specified torque. Do not use a power
screwdriver!
Note:
To avoid failures and/or use of valves with not allowed specification, you have to make sure that
the voltage of the new pilot 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.
The pilot valve set includes:
• 1 pilot valve
• 1 gasket
• 1 V-ring
• 2 pilot valve screws
For ordering information on pilot valves refer to section
5.2.2 .
VS2672926-KG00E_05/07 Page 29/97