ITT B216, Инструкция по установке и эксплуатации

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Figure 9: Compressor assembly
4. Replace with new snap ring, tube nut and compressor (only 0.5 and 0.75" sizes). Do not re-use
snap ring.
4.4 Mount the topworks to the valve
1. Regulate the air pressure
If the topworks is ... Then regulate the air pressure ...
Fail open or double acting In the upper cover to extend the compressor.
Fail close
In the lower cover to properly position the valve diaphragm.
2. Install the valve diaphragm.
For more information, see
4.10 Replace the valve diaphragm on page 12 .
3. Assemble the valve body and tighten the bonnet fasteners.
For more information, see
4.5 Tighten the bonnet fasteners on page 10 .
4.5 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. Use regulated air pressure to position diaphragm so that valve is slightly open.
You may need to use air pressure to actuate the valve.
3. Tighten the bonnet fasteners in a crisscross pattern.
For more information, see
4.6 Fastener torque table for valve body to topworks on page 11 .
4. Make multiple crisscross passes to build up torque to the final table value. Make additional criss-
cross passes using final table values to evenly tighten each fastener to within 5% of torque value.
5. Retighten the bonnet fasteners as noted above at ambient conditions after the system has cycled
through operating pressure and temperature.
6. Monitor the valve for leakage:
If leakage ... Then ...
Occurs at the body/bonnet
flange sealing area Depressurize the system and retighten the bonnet fasteners as noted
above.
4.4 Mount the topworks to the valve
10 Advantage® 2.1 Actuator Installation and Operation Manual