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Installation
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
operation.
1. If you have a weld end valve, then consider the following:
If you are welding ... Then ...
Manually
In line for schedule 10
or heavier pipe
In line for schedule 5
or lighter pipe and tub-
ing
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. Cycle the valve two to three times to verify smooth operation.
5. Set the travel stop.
For more information, see
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.
3. Tighten the bonnet fasteners in a crisscross pattern.
For more information, see
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual
Designed and Manufactured by ITT
Remove the topworks.
Remove the diaphragm.
Remove the topworks.
Remove the diaphragm.
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.
Tighten the bonnet fasteners
the travel stop
(page 9).
Fastener torque table for valve body to topworks
(page 7).
(page 8).
Installation
7
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