APV SPX DELTA DKR2, Руководство по эксплуатации

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11
Double-Seat Ball Valve with Cleaning Connection
DELTA DKR 2
Operating Manual : Rev. 7
UK
11.3 Installation of seals and guide bands
a. Slightly grease O-rings (5, 6) and guide bands (4) before their
installation in the shaft bearings (2).
b. Push upper and lower shaft bearing (2) with a little grease in the
housing, insert screws (3), but do not tighten them.
c. Slightly grease housing seals (7) before their installation on the
PTFE ball seals (9).
d. Turn valve ball into open position by hand and install ball seals
with a little grease at both sides.
e. Slightly grease O-rings (12) and insert them in the spray
connection (10).
11.4 Assembly of valve
a. 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), 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.
b. Screw in screws (18), but do not tighten them.
11. Service Instructions