Flowserve BTV 2000 Lined Butterfly Valve - Manual (Page 10)

Item Description Use
1 Liner Stem Seal Die To re-form the liner stem seal around the disc stem prior to installing the disc-liner
assembly into the body.
2 Stem Seal Push Rod To push the stem seal components and bearings into position in the body stem bore.
3 Disc Stem Liner Guide To protect the liner stem seal and ease assembly of the disc into the liner.
4 Disc Stem Body Guide To guide the disc-liner assembly into the stem bore of each body half.*
1. All Sizes
To assemble the disc (2) into the liner (10), first slide the
disc stem liner guide (repair tool item 3) over the long stem
of the disc. Then slide the long stem through either of the
liner stem seal necks (Figure 7). Push the liner down the
stem until it touches the edge of the disc.
Figure 7
2.
Sizes 2” - 8”
Rotate the disc 90 degrees (open position in the liner).
Using a vise, carefully squeeze the liner until the short
disc stem can slide through the other liner stem seal neck
(Figure 8). Exercise care to avoid gouging or damaging
the liner.
Figure 8
Sizes 10” - 24”
Clamp the long disc stem in a vise. Rotate the liner 90
degrees (disc open position) and by hand, squeeze the
liner until the short disc stem can slide into the other liner
stem seal neck (Figure 9). Exercise care to avoid gouging or
damaging the liner. This is a strenu ous operation especially
with UHMWPE liners. Heating the liner to 150° F prior to
attempting this operation will help. Two people may be
required to perform this operation on the larger sizes.
*On the 14”-24” sizes, there are 2 Disc Stem Body Guides. The longest one is for the long disc stem, the shortest one is for the short disc stem.
Repair Tools
SECTION VI
ASSEMBLY PROCEDURE
10
BTV/BUV 2000