TM 10-4320-303-13
Figure 4-13. 4 Inch Gate Valve Assembly Maintenance.
4.12.1.5 Assembly.
a. Position two discs (15 and 16) on pull nut (17).
b. Install two screws (14) in discs (15 and 16).
c. Install disc assembly (14) on valve stem (13).
d. Screw valve stem (13) into bonnet (10).
e. install new gasket (11) and bonnet (10) on valve body (12).
f. Ensure mounting holes in bonnet (10), gasket (11) and valve body (12) are aligned.
g. Install eight new lock washers (9) and screws (8). Tighten screws (8).
h. Insert new packing (6) in bonnet (10).
i. Install spring (7) and packing gland (5) on bonnet (10).
j. Install packing nut (4) on stem of bonnet (10).
k. Install handwheel (3) and nut (2) on stem of bonnet (10). Tighten nut (2).
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