Flowserve V-376 R4 Edward Valves - Manual (Page 8)

9
Flow Control Division
Edward V
alves
Packing Chamber Schematic V
alves of the Fig. 158, 5158, 9158 (see
pg. 3) type have a packing nut with threads that should be kept well lubricated to prevent corrosion and eliminate packing adjustment difficulties. Gland Bolts The removal of glands is accomplished by removing the nuts. Swing bolts can be removed by also driving out the pin.
Yoke Bushing The yoke bushings of small Edward valves are threaded to the yoke. Bushings are subject to wear in ser
vices where large
amounts of grit accumulate on the valve threads. Lubrication aids easy operation of valves and reduces wear of yoke bushings.
Gland Bolts
FLEXIBLE GRAPHITE RING
BRAIDED RINGS (2)
Swing T
ype
Yoke Bushing
Packing Gland T
orque
VA
LVE SIZE
FIGURE
1/4, 3/8
1-1/4
NUMBERS
1/2
3/4
1
1-1/2
2
158
125-130
140-145
265-270
280-285
435-440
5158,9158
FINAL
FT
-LB
FT
-LB
FT
-LB
FT
-LB
FT
-LB
828,829
INITIAL
21
40
62
153
210
847,848
849,868,869
FINAL
8-18
15-25
24-34
59-69
81-91
1029,1047
INITIAL
21
40
62
153
210
1048,1068
1069
FINAL
15-25
28-38
43-53
106-116
145-155
1441,1443
INITIAL
250
287
1641,1643
FINAL
71-81
82-92
1028
INITIAL
40
62
62
153
210
1046
FINAL
28-38
43-53
43-53
106-116
145-155
ALL TORQUES ARE GIVEN IN INCH-POUNDS EXCEPT WHERE NOTED