SPX DSV - Dismantling of Inner Parts; Replacement of Seals

12
10.4 Dismantling of inner parts
Disc seal, disc DSV and bush bearing
- Remove the inner hex. screw (3) from the valve housing
and disperse the housing halves. Pull disc seal with disc DSV
out of the valve housing. Remove the bush bearing from the
valve housing.
10.5 Replacement of seals
- Turn the disc DSV (2) in the disc seal (5) into the open position.
- Slightly pressing it, the disc seal (5) is deformed in its longitudinal
axis and can be slid over the short bearing spindle.
- Remove the disc seal from the actuating spindle.
- Clean the valve disc DSV
(2).
- Grease the holes of the new disc seal as described in chapter 9
and introduce the long actuating spindle of the disc DSV.
- Turn the disc DSV in the disc seal into open position.
- By a slight pressing, the disc seal is deformed in its longitudinal
axis and can be slid over the short bearing spindle.
10.6 Installation of the inner parts
- Introduce bush bearings (6) into the upper housing half.
- Insert the disc DSV being in open position with disc seal into
the upper housing half.
- Adjust the lower housing half and fasten the two housing halves
with the screws alternately crosswise.
Attention! While tightening the screws, the valve disc (2)
must not be within the disc seal (5). The valve
disc must be in open position.
10. Service Instructions
Double Seal Butterfly Valve
DSV
Operating Manual: rev. 2
UK
DSV-UK2.qxp / 10.2005
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