DeZURIK
BHP High Performance Butterfly Valves
D10503 Page 18 November 2015
Torque Specification (Continued)
Table B: Class 300 Valves—Gland Nut Torques and
Spring Washer Quantities for Live-Loaded Packing
Valve Size Gland Nut Torque
Spring Washers (17-7PH Stainless Steel)
Quantity
Each
Gland
Stud
Dimensions (Ref)
in [mm]
in mm in lbs Nm
Outside
Diameter
Inside
Diameter
Material
Thickness
Overall
Height
2 50 13±0.5 1.4±0.05 9
0.551
[14.00]
0.283
[7.19]
0.014
[0.35]
0.032
[0.81]
2.5 65 14±0.5 1.5 ±0.05 10
3 75 16±1 1.8±0.11 6
0.551
[14.00]
0.283
[7.19]
0.020
[0.50]
0.035
[0.89]
4 100 28±1 3.1±0.11 8
5 125 40±1 4.5±0.11 7
0.630
[16.00]
0.323
[8.20]
0.024
[0.61]
0.041
[1.04]
6 150 49±2 5.5±0.22 8
8 200 59±2 6.6±0.22 4
0.630
[16.00]
0.323
[8.20]
0.035
[0.89]
0.049
[1.24]
10 250 110±3 12.4±0.33
8
0.984
[25.00]
0.480
[12.19]
0.035
[0.89]
0.063
[1.60]
12 300 126±3 14.2±0.33
14 350 152±3 17.1±0.33 7
1.100
[27.94]
0.480
[12.19]
0.039
[0.99]
0.077
[1.96]
16 400 163±3 18.4±0.33 7
1.240
[31.50]
0.480
[12.19]
0.039
[0.99]
0.083
[2.11]
18 450 181±3 20.4±0.33 8
20 500 274±4 30.9±0.45 7
1.340
[34.04]
0.563
[14.30]
0.049
[1.24]
0.095
[2.41]
24 600 382±4 43.1±0.45 7
1.240
[31.50]
0.642
[16.31]
0.049
[1.24]
0.085
[2.16]