AValve stem
[Fully closed at the factory, when connecting the piping, when evacuating, and when charging additional refrigerant. Open fully after the operations above are completed.]
BStopper pin [Prevents the valve stem from turning 90° or more.]
CPacking (accessory)
DDistributer (gas) (option)
Mount packing (accessory) securely to the valve flange so that gas does not leak. (screw tightening torque is 43 N·m (430 kg·cm). Apply a coat of refrigerating machine oil to both surfaces of the packing.
D’ Connecting pipe (accessory)
[Use packing and securely install this pipe to the valve flange so that gas leakage will not occur. (tightening torque: 25 N·m (250 kg·cm)) Coat both surfaces of the packing with refrigerator oil.]
EOpen (operate slowly)
FCap, copper packing
[Remove the cap and operate the valve stem. Always reinstall the cap after operation is completed. (valve stem cap tightening torque: 25 N·m (250 kg·cm) or more)]
GService port
[Use this port to evacuate the refrigerant piping and add an additional charge at the site.
Open and close the port using a
Always reinstall the cap after operation is completed. (service port cap tightening torque: 14 N·m (140 kg·cm) or more)]
HFlare nut
[Tightening torque: 80 N·m (800 kg·cm) ···liquid, 55 N·m (550 kg·cm) ···oil blance
Loosen and tighten this nut using a
H’ Flare nut
Tightening torque is 55 N·m (550 kg·cm). Use a double spanner to open and close. Apply a coat of refrigerating machine oil to the flare bonding surface.
Iø 38.1
ø 44.5
JField piping
[Braze to the connecting pipe. (when brazing, use unoxidized brazing.)]
Appropriate tightening torque by torque wrench
Copper pipe external dia. (mm) | Tightening torque (N·m) / (kg·cm) | |||
ø 6.35 |
| 14 to 18 | / 140 to 180 | |
ø 9.52 |
| 35 to 42 | / 350 to 420 | |
ø 12.7 |
| 50 to 57.5 / 500 to 575 | ||
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|
ø 15.88 |
| 75 to 80 | / 750 to 800 | |
ø 19.05 |
| 100 to 140 | / 1000 to 1400 | |
Tightening angle standard |
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Pipe diameter (mm) | Tightening angle (°) |
|
| |
ø 6.35, ø 9.52 | 60 to 90 |
|
| |
ø 12.7, ø 15.88 | 30 to 60 |
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ø 19.05 | 20 to 35 |
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| |
ENGLISH
Note:
If a torque wrench is not available, use the following method as a standard
When you tighten the flare nut with a wrench, you will reach a point where the tightening torque will abrupt increase. Turn the flare nut beyond this point by the angle shown in the table above.
Caution:
Always remove the connecting pipe from the ball valve and braze it outside the unit.
-Brazing the connecting pipe while it is installed will heat the ball valve and cause trouble or gas leakage. The piping, etc. inside the unit may also be burned.
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