Flowserve TX2 Triple Offset High Performance Butterfly Valve IOM User Manual

Page 14

Flow Control Division

SECTION XIII

CHANGE OF GASKET

13.1 Loosen and remove the bolts from the body bottom cover and take off the bottom cover and
gasket (seal-2). (Fig. 21)

13.2 Replace the gasket (seal-2) with a new one, put back the bottom cover and the bolts, and
tighten the bolts in a diagonal sequence.

Fig.21

SECTION XIV

ASSEMBLY AND DISASSEMBLY

14.1 Assembly
14.1.1. Clean all valve components and make sure that they are free of oil, grease and dust.
14.1.2. Inspect all components for damage before starting to assemble. Look especially for
damage to the disc seal ring and body seat surface, and wear in the bearing areas of the body and
drive shaft.
14.1.3. Insert the disc into the body inner diameter, holding it at the open position. The disc is
double eccentric and closes clockwise. Ensure the eccentricities of the disc and body will be in
the same position when closed.
14.1.4. Insert the drive shaft bearing and bottom shaft bearing into the body.
14.1.5. Open the disc nearly 180

°. In this position it is possible to assemble the seal o-ring, the

seal ring and the seal ring retainer.

SEAL-2