Installation guide
Shut-off ball valve
Type GBCT 6s to GBCT 54s
Refrigerant: R744 (CO2)
Temperature range (TS): -40 °C – 149 °C / -40 °F – 300 °F
Max. working pressure (PS/MWP):140 bar / 2031 psig
CAUTION - RISK OF HIGH PRESSURE
This component shall be installed along with a pressure relief valve set to discharge at no higher than the rated pressure of this component. This component is intended for systems in which the critical pressure of the refrigerant will be exceeded. The relief valve shall comply with the requirements of ASME Section VIII, be marked “UV” and sized based on the refrigeration system capacity.
Warning: Applicable to all common non-flammable refrigerants, excluding R717 and to noncorrosive gases/liquids dependent on sealing material compatibility.
The design pressure shall not be less than the value outlined in Section 9.2 of ANSI/ ASHRAE 15 for the refrigerant used in the system. Only authorized persons are allowed to operate this valve, as closing can cause build-up of excessive pressure in the system. For the application use with R744 as part of a secondary loop or cascade system should refer to the datasheet for more attentions.
HIGH PRESSURE SIDE |
LOW PRESSURE SIDE |
“ HP” |
“LP ” |
Danfoss recommends that valves are installed so that the HP side is oriented towards the highest pressure side of the system when the valve is in the closed position.
Remove cap and access cap (if present)
Opening valve
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Valve size |
Max. Operating Torque |
|
|
|
|
|
Nm |
ft-lbs |
|
|
|
6s - 16s |
5 |
4 |
|
|
|
18s - 22s |
7 |
5 |
28s |
9 |
7 |
35s |
11 |
8 |
42s |
15 |
11 |
54s |
34 |
25 |
© Danfoss | DCS (bh) | 2019.10 |
AN300842286530en-000102 | 1 |
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