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Operation
Operation
Topworks operation
WARNING:
For a sealed bonnet, the bonnet intervals and seals should be constructed of materials suitable
for exposure to the process fluid or gas. If in doubt, contact ITT for evaluation.
The valve is closed with a clockwise rotation of the handwheel.
Valve size
Inch
0.50
0.75
1.00
1.25 and 1.50
2.00
2.50
3.00
4.00
Operate the Adjustable Open Stop
Item
1
2
3
4
5
1. Bonnet assembly should be installed to a body.
2. Loosen nut and turn counter clockwise until it is next to the head of the capscrew.
10
DN
15
20
25
32 and 40
50
65
80
100
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual
Stem travel
Inch
mm
0.25
6.4
0.38
9.5
0.50
13
0.81
21
1.12
29
1.61
41
1.61
41
2.12
54
Description
Bonnet assembly
Handwheel
Cap
Nut
Capscrew
Designed and Manufactured by ITT
Number of turns
2
3
4
4.88
6.75
8.12
8.12
10.62
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