Page 9 of 12
Copyright © AVK Holding A/S, original version, rev. 2, 30-Oct-2019
11.
Reseal the bolt heads with hot melt glue
Fig. 5, bolt tightening sequence
9.4 Replace Festo actuator piston seal and O-rings.
1. Isolate the valve from the piping system and de-pressurize; failure to do this can result in
the valve opening suddenly and violently when the actuator is disassembled
2. Disconnect the actuator from electrical- and air supply
3. Remove the four socket head bolts holding the endcap to the cylinder
4. Lift off the cylinder carefully and in a straight line until it is free of the piston
5. Replace O-rings and seals
6. Apply fresh grease to seals and O-rings
7. Install the cylinder over the piston and end cap
8. Apply locking agent to the threads before fitting the bolts
10. Decommissioning
When decommissioning the valve it should be disposed of according to local regulations and in
a way that allows as much recycling of materials as possible.
The valve contains no hazardous materials.