ITT Engineered Valves 903, Инструкция по установке, эксплуатации и обслуживанию

Страница: 13 / 23

5 Operation
5.1 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 Stem travel
Number of turns
Inch DN Inch mm
0.50 15 0.25 6.4 2
0.75 20 0.38 9.5 3
1.00 25 0.50 13 4
1.25 and 1.50 32 and 40 0.81 21 4.88
2.00 50 1.12 29 6.75
2.50 65 1.61 41 8.12
3.00 80 1.61 41 8.12
4.00 100 2.12 54 10.62
5.2 Operate the Adjustable Open Stop
1
2
3
4
5
Item Description
1 Bonnet assembly
2 Handwheel
3 Cap
4 Nut
5 Capscrew
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.
3. Back out capscrew turn counter clockwise until the lower end is flush with the underside of cap.
5 Operation
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual 11