061920
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Note: Information subject to change without notice.
3
3.4 Assembly
The assembly process, is opposite to the
disassembly process. The ball must be at the
closed position when assembling the body
and end cap. The stop plate must be correctly
positioned on the stem otherwise, the open
and close operation will be reversed.
Final inspection of repaired valve. It is
necessary to operate the valve open and
closed to ensure all the parts are assembled
correctly. Be sure the torque is the same
during the open/close operation. If the
torque is not the same during operation, it
may have some parts positioned incorrectly or
be experiencing interference. If this happens,
it must be disassembled and re-assembled.
The valve will be damaged if it is placed back
in the pipeline while wrongly assembled and
may be a safety hazard.
3.5 Tightening torque of gland bolts
Gland bolts can loosen after the valve is in
use over a period of time, and cause leakage.
It is necessary to check the gland bolts
periodically. If the bolts are loose, tighten
according to torque data given below.
4. Torque Data
PACKING GLAND
FL-CS-100-150 & FL-SS-100-150
SIZE
Bolt Size
N-m
(kgf-cm)
Tolerance
1/2”
1/4”-20UNC
2
20
+/- 10%
3/4”
1/4”-20UNC
2
20
1”
5/16”-18UNC
4
40
1-1/4”
5/16”-18UNC
4
40
1-1/2”
3/8”-16UNC
10
100
2”
3/8”-16UNC
10
100
2-1/2”
3/8”-16UNC
10
100
3”
W1/2”-
12UNC
20
200
4”
5/8”-11UNC
30
300
5”
5/8”-11UNC
30
300
6”
5/8”-11UNC
30
300
8”
5/8”-11UNC
30
300
FL-CS-100-300 & FL-SS-100-300
SIZE
Bolt Size
N-m
(kgf-cm)
Tolerance
1/2”
1/4”-20UNC
2
20
+/- 10%
3/4”
1/4”-20UNC
2
20
1”
5/16”-
18UNC
4
40
1-1/2”
3/8”-16UNC
10
100
2”
3/8”-16UNC
10
100
3”
W1/2”-
12UNC
20
200
4”
5/8”-11UNC
30
300
5”
5/8”-11UNC
30
300
6”
5/8”-11UNC
30
300
BODY BOLTS
FL-CS-100-150 & FL-SS-100-150
SIZE
Bolt Size
N-m
(kgf-cm)
Tolerance
1/2”
5/16”-18UNC
25
250
+/- 10%
3/4”
5/16”-18UNC
25
250
1”
3/8”-16UNC
40
400
1-1/4”
3/8”-16UNC
40
400
1-1/2”
7/16”-14UNC
45
450
2”
7/16”-14UNC
45
450
2-1/2”
7/16”-14UNC
45
450
3”
1/2”-13UNC
75
750
4”
1/2”-13UNC
75
750
6”
5/8”-11UNC
182
1850
8”
3/4”-10UNC
350
3500
FL-CS-100-300 & FL-SS-100-300
SIZE
Bolt Size
N-m
(kgf-cm)
Tolerance
1/2”
5/16”-
18UNC
25
400
+/- 10%
3/4”
5/16”-
18UNC
25
400
1”
3/8”-16UNC
40
400
1-1/2”
7/16”-
14UNC
45
450
2”
7/16”-
14UNC
45
450
3”
1/2”-13UNC
75
750
4”
5/8”-11UNC
182
1850
5”
3/4”-10UNC
350
3500
6”
1”-8UNC
569
5800
