Danfoss GBCT Data sheet
Data sheet
Shut-off ball valve for high pressure
Type GBCT for transcritical R744 / CO2 (140 bar / 2031 psig)
Danfoss shut-off ball valves, type GBCT for R744 (CO2) high pressure are manually operated shut-off valves for transcritical CO2 refrigeration systems, in order to open and to shut
off inner flow path by operating the valve spindle.
The valve structure and materials are designed and tested specifically for use with CO2 refrigerant. The valves are approved for use in transcritical CO2 refrigeration systems.
Features |
y |
Designed for transcritical CO2 systems |
y Rupture proof, internally-loaded spindle |
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y Maximum working pressure (PS): |
design ensures safe operation under extreme |
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140 bar / 2031 psig |
pressures |
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Temperature range (TS): |
y Specially-selected sealing material for CO2 |
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-40 °C – 149 °C / -40 °F – 300 °F |
refrigerant |
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y UL/cUL Listed, complies with Pressure |
y Reinforced copper-iron tube extensions |
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Equipment Directive 2014/68/ EU |
permit trouble-free valve installation with |
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y Full port construction to match line size |
traditional torch-brazing methods |
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y Bleed hole design avoids liquid entrapment |
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when valve is closed |
© Danfoss | DCS (bh) | 2020.03 |
AI300841064527en-000301 | 1 |
Data sheet | Shut-off ball valve for high pressure, type GBCT for transcritical R744 / CO2 (140 bar / 2031 psi)
Approvals
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Technical data |
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Refrigerants |
R 744 (CO2) |
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Oils: |
POE, PAG |
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Continuous operating temperature (COT) |
-40 °C – 149 °C / -40 °F – 300 °F |
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Design Pressure (DP)/ |
140 bar / 2031 psig |
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Maximum abnormal pressure (MAP) |
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Flow direction |
bi-flow |
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HIGH PRESSURE SIDE |
LOW PRESSURE SIDE |
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“ HP” |
“LP ” |
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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.
CAUTION - RISK OF HIGH PRESSURE
Do not close with CO2 liquid temperature below ambient. 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.
Notes: For the application use with R744 as part of a secondary loop or cascade:
1.The design pressure of the refrigerant containing component is not less than the design pressure of the associated components.
2.The component is not provided with any pressure relief or pressure regulating relief valve and that a sufficient number of valves having capacity deemed adequate shall be field-installed on the refrigeration system.
3.When the refrigeration system is de-energized, venting of R744 may occur through the pressure regulating relief valves, and may need to be recharged, but the valve should not be defeated or bypassed.
4.A sufficient number of pressure relief and pressure regulating valves may need to be provided based upon system capacity and located such that no stop valve is provided between the relief valve and the parts or section of the system being protected.
Ordering |
GBCT without access port |
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Type |
Size |
Kv value |
Cv value |
Multi pack |
Code no. |
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[inch] |
[m3/h] |
[gal/min] |
[Pcs. per pack] |
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GBCT 6s |
1⁄4 |
0.9 |
1.0 |
30 |
009L6415 |
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GBCT 10s |
3⁄8 |
3.7 |
4.3 |
30 |
009L6416 |
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GBCT 12s |
1⁄2 |
5.4 |
6.2 |
30 |
009L6417 |
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GBCT 16s |
5⁄8 |
10.4 |
12.1 |
30 |
009L6418 |
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GBCT 18s |
3⁄4 |
16.4 |
19.0 |
16 |
009L6419 |
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GBCT 22s |
7⁄8 |
23.7 |
27.5 |
16 |
009L6420 |
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GBCT 28s |
1 1⁄8 |
42.3 |
48.9 |
4 |
009L6406 |
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GBCT 35s |
1 3⁄8 |
67.1 |
77.6 |
4 |
009L6410 |
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GBCT 42s |
1 5⁄8 |
83.1 |
96.1 |
4 |
009L6411 |
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GBCT 54s |
2 1⁄8 |
171.3 |
198.0 |
2 |
009L6412 |
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GBCT with access port |
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Type |
Size |
Kv value |
Cv value |
Multi pack |
Code no. |
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[inch] |
[m3/h] |
[gal/min] |
[Pcs. per pack] |
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GBCT 6s |
1⁄4 |
0.9 |
1.0 |
30 |
009L6581 |
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GBCT 10s |
3⁄8 |
3.7 |
4.3 |
30 |
009L6582 |
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GBCT 12s |
1⁄2 |
5.4 |
6.2 |
30 |
009L6585 |
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GBCT 16s |
5⁄8 |
10.4 |
12.1 |
30 |
009L6586 |
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GBCT 18s |
3⁄4 |
16.4 |
19.0 |
16 |
009L6588 |
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GBCT 22s |
7⁄8 |
23.7 |
27.5 |
16 |
009L6589 |
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GBCT 28s |
1 1⁄8 |
42.3 |
48.9 |
4 |
009L6451 |
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GBCT 35s |
1 3⁄8 |
67.1 |
77.6 |
4 |
009L6453 |
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GBCT 42s |
1 5⁄8 |
83.1 |
96.1 |
4 |
009L6454 |
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GBCT 54s |
2 1⁄8 |
171.3 |
198.0 |
2 |
009L6456 |
© Danfoss | DCS (bh) | 2020.03 |
AI300841064527en-000301 | 2 |
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