The item numbers refer to the spare parts drawing
(DIN design: RN 01.078)
11.1 Dismantling from the line system
a. Shut off connecting lines, lower line pressure and discharge
if possible.
b. Disconnect pneumatic and electric connections
c. Dismantle cleaning line.
d. Screw off valve position indicator.
e. Remove flange screws.
f. Detach ball valve from the flanges.
11.2 Dismantling of seals and guide bands
a. Detach flange seals (8).
b. Take off turning actuator (15) after removal of screws (16).
c. Release screws (18) and yoke (17), coupling (14), indicator (13)
and spray connection (10).
Danger! Do not replace seals before removal of turning
actuator from the valve.
d. Pull out PTFE ball seals (9) with appertaining housing seals (7).
To pull the ball seals out, half open the ball by hand and
grasp alternately behind the seal!
Attention! Ball and ball seal are sensitive to mechanical
damage, the surfaces must not be touched by tools.
e. Having released the screws (3), pull both shaft bearings (2) out of
the housing and replace O-rings (5) and (6) and guide bands (4).
Attention! With dismantled shaft bearings and seals, the
housing with ball must not be subject to vibrations.
9
UK
11. Service Instructions
Double - Seat Ball Valve DELTA DKRT 2
Tank Outlet Valve
Operating Manual : Rev. 4
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