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

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4 Installation
4.1 Install the valve and topworks
NOTICE:
The topworks size and configuration can limit the actual operating pressure. Consult the Pure-
Flo catalog for pressure limitations. Consult the factory or engineering catalog for vacuum op-
eration.
1. If you have a weld end valve, then consider the following:
If you are welding ... Then ...
Manually Remove the topworks.
Remove the diaphragm.
In line for schedule 10 or
heavier pipe Remove the topworks.
Remove the diaphragm.
In line for schedule 5 or light-
er pipe and tubing You can weld with automatic equipment. Before you perform the
weld:
1. Remove the topworks (optional).
2. If left installed, set the valve to the open position.
3. Properly purge the valve with an inert gas.
2. Install the valve.
Install with the raised hash marks (castings) or small machined dots (forgings) on the valve body at
the 12 o'clock position to achieve the optimum drain angle.
3. Prior to pressurization (with the valve slightly open), tighten the bonnet fasteners.
For more information, see
4.2 Tighten the bonnet fasteners on page 8 .
4. Cycle the valve two to three times to verify smooth operation.
5. Set the travel stop.
For more information, see
4.3 Set the travel stop on page 10 .
4.2 Tighten the bonnet fasteners
CAUTION:
Do not tighten fasteners while the system is pressurized or at elevated temperatures (greater
than 38°C | 100°F).
1. Depressurize the system.
2. Position diaphragm so that valve is slightly open.
For valves with an actuator, you may need to use regulated air pressure to actuate the valve.
4 Installation
8 Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual