Flowserve BTV 2000 Lined Butterfly Valve - Manual (Page 12)

Figure 13
Size 20” and 24”
Prior to putting the liner-disc assembly into the body, the
disc support stud (17) must be attached to the short stem
of the disc. Thread one nut (18) on the short threaded end
of the stud all the way up to the flat on the stud. Apply a
thread locking material such as LOCKTITE ® to the threads
on the short end of the stud and screw the stud into the
tapped hole on the short stem end of the disc. Torque the
stud to 100 ft-lbs, then tighten the nut against the disc stem
end to a torque of 100 ft-lbs.
6.
Size 2”
Spread the liner flanges apart and firmly push the liner-
disc assembly into the lower body half.
Size 3”
Slide the liner stem sleeve (21) over the liner stem seal
neck on the short stem of the disc. Spread the liner flanges
apart and firmly push the liner-disc assembly into the lower
body half.
Sizes 4” - 24”
Remove the liner stem seal die from the short stem end
of the disc. Place the disc stem body guide (repair tool item
4) over the short stem of the disc (Figure 14). The end of
the disc stem body guide must cover the liner stem seal
neck for the tool to work properly. Spread the liner flanges
apart and carefully lower the liner-disc assembly into the
lower body half (Figure 15). Firmly push the liner-disc
assembly into the lower body half. Pull the disc stem body
guide off the short disc stem.
Figure 14
Figure 15
7.
Sizes 2” - 12”
Orient the top body half so that when put together with
the bottom half, the counterbored bolt holes will line up
with the body bushings (1C) in the bottom half. The DURCO
logo on the top body half should be on the opposite side of
the bottom half when bolted to gether. Firmly push the seat
energizer into the groove in the top body half. Orientate the
angled cuts on the ends of the energizers such that when
the body halves are bolted together, the ends on the top half
will mate with the bottom half. (Figure 16).
Figure 16
Sizes 14” - 24”
12
BTV/BUV 2000