Flowserve TX2 Triple Offset High Performance Butterfly Valve IOM - Manual (Page 11)

Flow Control Division
11
SECTION XII
CHANGE OF DISC AND BODY SEAT
12.1 To facilitate reassembly, mark the positon of the operator, yoke and body mounting flange
before disassembling (Fig. 15)
12.2 For reassembly, make a mark on the retainer and disc before disassembling.
12.3 Turn the stem counterclockwise around 180° (Fig. 16in order to make it easier to loosen and remove the bolts
and take off the retainer, gasket and disc seat.
Fig.16
12.4 Loosen all bolts from the retainer by hexagonal wrench.
12.5 Take off the retainer, disc seat and gasket (seal-3) in sequence.
12.6 The replacement of body seat is available for Class 300 and 600 valves Class 150 valve bodies
have a one piece design.
12.7 To make a mark for reassemble on the body and body seat before replacing the body seat.
Fig 15