SPX FLOW APV DELTA SD4 Series Instruction Manual page 25

APV
APV_SD4_ATEX_UK-0_122018.indd
fig. 11.3.1.
guide bush
shaft seal
seat seal
housing seal
protective tube
guide rod
shaft
seat seal
Double seal valve
DELTA SD4-ATEX
Instruction Manual: UK - rev. 0
11. Service Instructions
11.3. Installation of seals and Assembly of valve
1. Insert the guide bush into the yoke.
Afterwards, insert the shaft seal and press in
the slightly greased seat seal (see fig. 11.3.1.).
See to the correct installing position.
2. Install the yoke at the actuator.
yoke 3. Insert the seat seal into the shaft. Use the assembly tool
to install the lower seat seal (see chapter 15). Grease the
seat seal only slightly before its installation.
In case of manual installation, vent the seal groove with
a thin object between the seal and groove wall.
4. Install the protective tube via the thread of the guide rod.
Slide the shaft through the yoke and actuator. Place centering
washer and tighten the actuator screw on the guide rod.
Hold up the centering washer during this process.
Tightening torque 40 Nm.
5. Slightly grease the housing seal and place it in the groove
of the yoke.
6. Fasten the valve position indicator.
11.4. Installation of valve
1. Connect compressed air supply.
2. Valve design NC :
Do not touch movable valve parts!
Risk of injury by sudden valve operation.
3. Place the valve insert carefully into the housing.
The housing seal must not be damaged during the installation.
Tighten the hexagon screws crosswise in the housing flange.
4. Valve design NC:
5. Check the basic adjustment of the valve position indication
if necessary.
Control actuator with air.
Shut off compressed air.
UK
20