Series
300 - Valve Seating Torques (In.-Lbs.)
|
Valve
Size
|
Standard
Disc Differential Pressure
|
Undercut
Diff. Press.
|
|
50
PSI
|
100
PSI
|
150
PSI
|
200
PSI
|
75
PSI
|
|
2"
|
100
|
106
|
111
|
117
|
-
|
|
2-1/2"
|
150
|
163
|
176
|
189
|
-
|
|
3"
|
207
|
220
|
232
|
244
|
-
|
|
4"
|
290
|
323
|
357
|
390
|
-
|
|
5"
|
423
|
481
|
540
|
598
|
-
|
|
6"
|
599
|
691
|
783
|
875
|
-
|
|
8"
|
1,060
|
1,183
|
1,307
|
1,430
|
819
|
|
10"
|
1,671
|
1,872
|
2,074
|
2,275
|
909
|
|
12"
|
2,568
|
2,795
|
3,023
|
3,250
|
1,445
|
All torques shown on the chart were derived from test data using water
at 60°F. For torques using dry gases, multiply these numbers by
1.6. For torques involving other media, please consult the factory.
There
is no safety factor included in the numbers shown on this chart. For
actuator sizing, Center Line recommends that these values be multiplied
by 1.2 for single valve applications, and 1.5 for 3-way ("tee")
applications.
Under
certain conditions, hydrodynamic torque can meet or exceed seating and
unseating torques. When designing valve systems, hydrodynamic torque
must be considered to help insure correct selection for the application.
Toll
Free: 1-800-447-4230
Fax: 713-462-4187
Local: (713) 462-4181
24 Hr. Pager (713) 764-2285
E-mail: valves@aivinc.com
Copyright© AIV, Inc. 2001
