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APV_DKR2 ATEX_UK-0_022018.indd
UK
Double Seat Ball Valve DELTA DKR2
ATEX Design
Instruction Manual: UK-0
APV
12. Service Instructions
12.3. Installation of seals and guide bands
1.
Slightly grease O-rings (5, 6) and guide bands (4) before their
installation in the shaft bearings (2/22).
2.
Push upper and lower shaft bearing with a little grease in the
housing, insert screws (3), but do not fasten them..
3.
Slightly grease housing seals (7, 7a) before their installation on the
PTFE ball seals (9, 9a).
4.
Turn valve ball into open position by hand and install ball seals with
a little grease at both sides.
5.
Slightly grease o-rings (12) and insert them in the spray connection
(10).
12.4. Assembly of valve
1.
To ensure a safe handling of the valve, clamp the lower bearing
flange into a vice with protective cheeks. Turn the ball into "open
position". Place yoke (17), spring (21) for potential equalization,
spray connection (10), indicator (13) and coupling (14) on the ball
housing. The lower coupling cam must point to the lower yoke bore
(x) and the indicator must point into flow direction.
2.
Screw in screws (18), but do not fasten them.
12.5. Adjustment of operating position
Attention!
For a safe, perfect and fast adjustment of the
operating position, we recommend to use two
separate FG flanges.
2/22
5
4
4
6
9/9a
7/7a
upper
shaft bearing
lower
shaft bearing
3
12
13
X
17
14
21
10
18