TM 10-4610-243-13
4-31. GATE VALVE ASSEMBLY (4-INCH) REPAIR - cont.
NOTE
Two flat washers must installed under the screw heads in the positions shown.
(7)
Install twelve flat washers (18), eight screws (9), lockwashers (8) and nuts (7) in valve body (17) and
bonnet (10). Make sure two flat washers are installed under screw heads (four places) as shown.
(8)
Slide packing ring (6) over stem (12) and down into bonnet (10).
(9)
Slide packing gland (5) and gland spring (4) over stem (I2).
(10)
Slide packing nut (3) over stem (12) and tighten onto top of bonnet (10).
(11)
Position handwheel (2) on stem (10) and secure with nut (1).
Install gate value. Refer to figure 4-27.
NOTE
Install female coupling with locking arms positioned as shown.
(12)
Position gasket (20) and female coupling (19) on gate valve (21).
(13)
Install ten flat washers (18), eight screws (17), flat washers (16), lockwashers (15) and nuts (14). Make
sure two flat washers (18) are installed under screw heads in positions shown.
NOTE
Ensure gasket is fully seated in groove of coupling.
(14)
Install gasket (13) in female coupling (19).
(15)
Connect plug (12) to female coupling (19) with ring (11).
(16)
Position gasket (10) and male coupling (9) on gate valve (21).
(17)
Install ten flat washers (8), eight screws (7), flat washers (6), lockwashers (5) and nuts (4). Make sure
two flat washers (18) are installed under screw heads in positions shown.
NOTE
Ensure gasket is fully seated in groove of cap.
(18)
Install gasket (2) in cap (3).
(19)
Connect cap (3) to mate coupling (9) with ring (1).
(20)
Install gate valve assembly in water system (para 3-4a).
(21)
Startup water system (para 2-12c) and check gate valve assembly for leaks.
4-88
