Doc. #: A-718C, Rev. 1
Page 32 of 36
8.1.18 Rotate the stem until 7/16"-20 threaded area is well below tongue on the seat insert. Lightly grease the
7/16"-20 threads. Insert retainer seal washer, O-ring and retainer assembly through the bottom of the stem
and secure the seat seal in place with retaining nut. Once nut is tightly secured, insert retaining pin to
prevent retainer assembly and nut from backing out. Ensure that the retainer assembly is inserted with a
Teflon
®
seat seal (item 9) facing the body and with an O-ring (item 17) in the respective groove.
NOTE
: Extra care should be exercised when handling, mounting and un-mounting valves as the
stem extends out of the body. Any damage to the stem will make the valve inoperable with the
mating check valve. The stem must be protected at all times.
8.1.19 Try inserting the outlet flange (item 30), without an O-ring (item 12) or gasket (item 22), into the side port
of the body. It should go down all the way, so that the facing flanges are touching or are within 1/32" of
touching.
8.1.20 Apply grease to the three (3) cap screws (item 6), in the bore body and on the flange of the side port of the
body. Also, apply grease on the flange face (item 7) and in the O-ring grooves. Put the outlet flange gasket
(item 23) on the outlet flange and then put the O-rings (item 13) on. Rotate the flange to verify that the O-
rings are evenly recessed into the grooves of the hub of the flange. Be sure to apply a light coating of
grease to the exterior of the O-rings after they are in place on the outlet flange.
Figure 8-27 Insert Retainer Washer Figure 8-28 Secure Retaining Nut
Figure 8-29 Insert Retaining Pin
Figure 8-30 Install Flange Gasket
Figure 8-31 Install Flange O-rings
Figure 8-32 Grease the O-rings
