|
| |
TM 5-5430-219-13
4 Carefully inspect gasket for deterioration, distortion, cracks, or
breaks.
Replace when service is doubtful.
5 Polish bonnet stem with a crocus cloth; then coat with grease.
ASSEMBLY (See figure 3-10.)
1
2
3
4
5
6
7
8
9
10
11
12
13
Thread disk riser (9) into valve stem (3) approximately four complete
turns.
Secure disk riser (9) completely in bonnet (5).
Lay valve body (15) on its side on clean surface.
Place bonnet gasket (16) over disk riser (9).
Install two disk halves (10 and 11) onto disk riser (9).
Insert disk halves (10 and 11) into slot in valve body (15).
Bring valve body (15) and bonnet (5) to erect Position.
Align screw holes and bonnet gasket (16) holes; install eight hex-head
capscrews (14), lockwashers (13), and hex nuts (12) until finger-tight.
Insert packing ring (8) on valve stem (3).
Install packing nut (4) on valve stem (3); manually push packing nut
down on neck of bonnet (5) until packing ring (8) is well seated in
bonnet.
Remove packing nut (4) from valve stem (3); install gland spring (7)
and packing gland (6) on valve stem.
Install packing nut (4), handwheel (2), and jam nut (1) on valve stem
( 3 ) .
Install eight hex-head capscrews (14), lockwashers (13), and hex nuts
(12) on valve body (15); torque to 16 ft-lb (21.84 N•m).
INSTALLATION (See figure 3-9.)
1 Place flange gasket (13) on face of gate valve
2 Place male flanged adapter (12) against flange
(7) and align holes.
gasket (13) and align
h o l e s.
3 Install washers (11) and hex-head
adapter (12), flange gasket (13),
4 Install lockwashers (9) and plain
(40.95 N•m).
capscrews (10) on male flanged
and gate valve (7).
hex nut (8); torque to 30 ft-lb
3-23
|
