15
APV_DKR2_DE-9_032019.indd
Double Seat Ball Valve
DELTA DKR 2
Instruction Manual: UK - rev. 9
APV
UK
12.5. Adjustment of operating position
Caution!
For a safe, perfect and fast adjustment of the
operating position, we recommend to use two
separate FG flanges.
12.5.1. Adjustment of operating position with FG flanges
Install the ball seals as described in 12.3.
Assemble the valve as described in 12.4.
Turn the ball into its exact open position.
1.
Control actuator (15) with pneumatic air (min. 6 bar) and place it on
the yoke.
2.
Screw in screws (16), but do not fasten them.
Caution!
Do not reach into the open valve after installation
of the actuator!
Risk of injury by sudden operation of the valve.
3.
Screw down FG flanges at the housing. The ball must be in its exact
open position.
4.
Release both screws (3) of the shaft bearing (ball centers between
the seals) and retighten them.
5.
Slightly turn the actuator in anticlockwise direction to adjust the play
in the connecting parts.
The ball must keep its exact open position!
Caution!
Do not reach into the open valve.
Risk of injury by sudden operation of the valve.
6.
At first, tighten the screws (18) and then tighten the screws (16).
Operate the turning actuator several times to check the operating
accuracy of the ball in "open position".
7.
Shut off the air supply to the turning actuator and dismantle the FG
flanges.
8.
Insert the valve in closed position between the flanges into the
pipeline and fasten it with the screws (20).
Tightening torque: M8
Md = 16 Nm
M10 Md = 40 Nm
9.
Connect pneumatic air line with the turning actuator
10.
Connect the cleaning line.
11.
Attach valve position indicators.
12. Service Instructions
FG flange
16
18
3
15
!
!
