SPX APV DELTA SVS1F DN 125, Руководство по эксплуатации, Страница: 15 / 45

10
UK
10. Service Instructions
10.3 Dismantling of inner parts
seal ring, bush bearings, valve disc
- Remove all fastening screws (9) around the valve housing and
part the housing halves.
10.4 Replacement of seals
a. Take the flange seals (4) out of the groove and replace them.
Remove the fastening screws (9) of the valve core and part
the housing halves.
b. Turn the valve disc (2) in the sealing ring into open position.
c. Take the bush bearings (5) from the disc bolts.
d. By slight pressing, the seal ring (6) is deformed longitudinally.
Slide the seal ring over the short disc bolt and over the long
disc bolt off the disc.
e. Clean the valve disc (2).
10.5 Installation of seals and bush bearings
ATTENTION! Reminder to use the suitable grease
for the respective seal material.
a. Provide the inner surfaces of the cross bores as well as the
disc bolts with a thin layer of grease before the installation of the
disc.
b. Slide the sealing ring (6) over the long disc bolt, at first, and then over
the short disc bolt on the disc (2).
c. Push the bush bearing (5) on the disc bolts.
d. Turn the valve disc in the seal ring into open position.
e. Place the valve disc with seal ring and bush bearings into one
housing half. Adjust the other housing half and tighten it crosswise
with the inner hexagon screws (9).
ATTENTION! Tightening the inner hexagon screws,
the valve disc must be in open position.
f. Fasten the mating flanges (3) with the screws (8).
Butterfly Valve
DELTA SVS1F DN125-250
Operating Manual rev.2