control unit
actuator screw
hex. nut
centering washer
CU adapter
shaft seal
guide bushing
shaft
actuator
housing
seat seal
seat seal
housing seal
yoke
clamp
16
APV_SW4_UK-4_082017.indd
UK
Single seat and change-over valve
DELTA SW4
Instruction manual: UK - rev.4
APV
11. Service Instructions for Single seat valve
Single seat valves
DELTA SW41, SW42, SWE41, SWE42, SWE43, SWE44
11.1. Dismantling from line system
1.
Shut off line pressure and drain lines if possible.
2.
Valve design NC:
Control actuator with air.
Do not touch movable parts!
Risk
of
injury.
3.
Detach clamp and lift valve insert off the housing.
4.
Shut off compressed air and remove compressed air supply.
5.
Remove conrol unit from actuator.
11.2. Dismantling of wear parts (product-wetted parts)
1.
Remove housing seal.
2.
Unscrew actuator screw from guide rod.
3.
Release actuator screw from the guide rod while holding up the
centering washer. Remove the centering washer.
4.
Pull the valve shaft out of the actuator.
Remove the seat seal.
5.
Unscrew the yoke from the actuator.
6.
Detach the seat seal, shaft seal and guide bushing.
Single seat valve