Vogt valves – Flowserve Vogt Forged Steel Gate User Manual
Page 49
Flow Control
Vogt Valves
FCD VVENIM2000-02
Forged Steel Gate, Globe and Check Valves
49
Maximum Handwheel Closing Torques, Typical (ft-lb)*
Size,
NPS
Class 800 Conventional
Port Gate Valve
Class 800 Full Port
Gate Valve
Class 1500 Conventional
Port Gate Valve
Class 1500 Full Port
Gate Valve
Class 2500 Full Port
Gate Valve
1/4"
8
—
—
—
—
3
/
8
"
8
—
—
—
—
1/2"
15
15
25
25
30
3/4"
15
20
25
35
75
1"
20
40
35
55
75
11/4"
50
50
75
75
—
11/2"
50
70
75
115
175
2"
70
100
115
—
175
*Torque based on valve pressure rating at 100°F.
Maximum Handwheel Closing Torques, Typical (ft-lb)*
Size,
NPS
Class 800 Conventional
Port Globe Valve
Class 800 Full Port
Globe Valve
Class 1500 Conventional
Port Globe Valve
Class 1690 Conventional
Port Globe Valve
(1)
Class 2680 Full Port
Globe Valve
(1)
1/2"
15
15
25
25
30
3/4"
15
30
25
25
75
1"
30
40
35
40
75
11/4"
—
—
60
—
—
11/2"
40
75
60
125
175
2"
75
125
100
125
175
*Torque based on valve pressure rating at 100°F.
(1)
The NPS 1.5 and 2 have hammer blow-type handwheels.
Recommended Maximum Bonnet Bolt Torques
(Dry, Unlubricated Values)
Bolt Diameter
Torque (ft-lb)
B7 & B16
Torque (ft-lb)
B8M
5
/
16
"
25
22
3
/
8
"
40
36
7
/
16
"
50
45
1/2"
85
75
9
/
16
"
144
130
5
/
8
"
125
115
3/4"
175
156
7
/
8
"
530
480
1"
795
710
Note: Reduce above values by 25 percent to 30 percent if any type of lubrication
is used on bolting.