Azbil ACN Series, User Manual

Page: 27 / 100

4-3
4-2-1-3. Assembly procedure
Step Procedure
1 Insert a spiral gasket into valve body. (Apply Never-seize* on all valves except
degreased valve for oxygen application.)
2 Insert cage (lower) into the valve body.
3 Coat seal ring lightly with silicon grease, assemble on a slot on cage (upper)
and insert plug into cage. (Apply Never-seize* on all valves except degreased
valve for oxygen application.)
4 Insert gasket (lower) into valve body. (Apply Never-seize* on all gaskets
except degreased valve for oxygen application.)
5 Coat scraper ring lightly with silicon grease, assemble on a slot above the plug
and push the plug into the cage. (Apply Never-seize* on all gaskets except
those for degreased valve for oxygen application.) When the plug's tip passes
through seal ring, apply even load on the plug to push it in until the tip of the
plug touches and sits against the seat on the cage (lower).
6 Insert gasket (upper) into cage (upper). (Apply Never-seize* on all gaskets
except those for degreased valve for oxygen application.)
7 Put the bonnet on the valve body and check that the bonnet is correctly mated
with the indented section of the valve body. Tighten the hex nuts uniformly,
paying attention so that they are not tightened unevenly (tighten alternately
the ones located at symmetrical positions). For tightening torques, see Table
4-1.
8 Insert the gland packing as shown in Fig. 2-1.
Note: When yarn packing sheets are used, overlap sheets in such manner that their cut
ends are positioned alternately.
9 Place the packing follower and packing flange, and tighten the nuts. For the
tightening torques, See "Table 2-2. Tightening torques of packing flange
nuts" on page 2-2.