Flowserve Swing Check Valves 2.5-24 - Manual (Page 23)

Swing Check Valves FCD ADENIM0013-00
22
6.0 ASSEMBLY
(Continued)
6.1.1.2 Hinge Mounting
6.1.1.2.1 Pin Mounted in Body Wall (Figs. 9-13)
Pin Mounted in Body Wall (Figs. 9—13). The disc assembly should be lowered into
the body and supported either by hand or with a sling. With the pin (039, 041, 5)
partially inserted through the body wall, align the hinge assembly with the pin and
push the pin through the hinge, into the journal on the opposite body wall.
Depending on the type of hinge cover supplied it may be necessary to affix a roll pin
(58) between the end of the hinge pin and the cover, plug or bonnet (037, 10, SA).
With the plug type cover (Fig. 11) in which the plug is an integral part of the pin the
gasket should be placed on the plug prior to insertion of the pin. If the plug is
separate, the gasket and the roll pin should be affixed and the plug screwed into the
body. Where a spiral wound gasket is used, care must be taken to correctly
compress the gasket. The plug should be tightened until the proper compressed
gasket thickness is achieved.
Where a pressure seal bonnet has been supplied, the pin (5) and bonnet (2A) or
integral pin/bonnet should be inserted. The gasket can then be inserted into the
bore until it contacts the bonnet. With the above in position the cover (10) is fitted on
to the studs (11) and pushed up against the gasket. Using a criss cross pattern the
nuts should be torqued to the valves shown in Table (2). Where a blind flange cover
is used, the gasket (101) and roll pin (263) should be affixed and the cover (037)
placed over the studs (208). After the nuts (229) have been threaded on to the
studs, they should be torqued to the values listed in Table 2.
FIGURE 9