NIBCO Rubber-Seated Butterfly Valves User Manual
Page 3
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relation to the valve body and piping system. Pre-planning may save from having to
remove a “just installed” valve and reinstalling in another orientation.
TABLE 1
Piping/Flange Inside Diameter Requirements
III.
GEAR OPERATOR INSTALLATION HANDWHEEL POSITIONING
TABLE 2
Tools Required
Fire Protection
(UL/FM)
2” – 8”
9/16” hex wrench and 1/8” hex Allen wrench
10” – 12”
3/4” hex wrench and 1/8” hex Allen wrench
Commercial
2” – 8”
9/16” hex wrench
10” – 14”
3/4” hex wrench
16” – 18”
1-1/8” hex wrench
Valve
Series
LD/WD/LC/WC
1000/2000/3000/5000
LD7000/8000 Series
N200 Series
Valve Size
(Inches)
Minimum
Pipe/Flange
ID for Disc
Clearance
Maximum
Pipe/Flange
ID for
Proper Seal
Minimum
Pipe/Flange
ID for Disc
Clearance
Maximum
Pipe/Flange
ID for
Proper Seal
Minimum
Pipe/Flange
ID for Disc
Clearance
Maximum
Pipe/Flange
ID for
Proper Seal
2
2.00
2.49
1.31
2.43
1.38
2.24
2-1/2
2.37
2.86
1.89
3.06
1.95
2.74
3
2.67
3.43
2.64
3.65
2.66
3.33
4
3.69
4.55
3.67
4.75
3.67
4.55
5
4.76
5.62
4.44
5.54
4.48
5.50
6
5.96
6.62
5.96
6.84
5.96
6.66
8
8.01
8.62
7.85
8.89
7.85
8.61
10
10.00
10.80
9.73
10.70
9.76
10.75
12
11.99
13.12
11.71
12.74
11.72
12.79
14
13.16
13.77
13.02
15.50
—
—
16
15.34
16.30
15.20
17.90
—
—
18
17.23
18.31
17.16
19.67
—
—
20
19.04
20.08
19.10
21.05
—
—
24
23.05
24.71
23.04
25.57
—
—
28
—
—
27.10
29.31
—
—
30
29.06
30.29
29.08
31.28
—
—
32
—
—
30.91
33.93
—
—
36
33.59
35.78
33.60
36.77
—
—
42
39.83
42.77
39.87
44.96
—
—
48
44.85
48.27
44.86
51.57
—
—
54
—
—
50.67
54.25
—
—
60
—
—
54.93
60.25
—
—