Data Sheet
...................................................................................................................................................................

Floating Ball Valve Design Torque

  

Size

Design Torque (N.m)

in

Class 150
Class 300
Class 600
Class 900
Class 1500
1/2
8
11
17
21
34
3/4
9
15
21
37
47
1
18
24
44
73
120
1-1/2
48
72
92
145
175
2
60
84
133
205
300
2-1/2
96
108
155
330
450
3
108
144
205
440
610
4
156
276
375
---
---
5
420
700
---
---
---
6
670
1115
---
---
---
8
1175
2636
---
---
---
10
2400
5400
---
---
---
....................................................................................................................................................................................
Notes:
1. For FC, FR & FF series valves, torque is the same.
2. All valves are in normal temperature, with PTFE seat for Class 150~300 and Nylon seat for Class 600~1500.
3. For cryogenic ball valve, torque will be 2~2.5 times the above torque.
4. Torque shown in this table is to be used as a guide for actuator selection. A safety factor of 1.5 is recommended for actuator sizing.
5. Torque may be changed according to different medium and trim material.

©2005 SUZHOU VIZA VALVE CO., LTD.   
Add:20D, King's Tower, 12 Shishan Road, Suzhou, China
Tel: 0086-512-67015219 Fax: 0086-512-68081920 Email: sales@vizavalve.com