Data Sheet
Electric regulating valves
Type CCMT 3L, 5L, 8L and 10L
One valve, 3 applications: HPV, GBV and EEV
The CCMT Light is an electrically operated valve designed speci€cally for operation in CO2
systems.
The CCMT Light valve concept is designed to ful€ll global refrigeration requirements.
The valve is capable of functioning either as an expansion valve, as a pressure regulator for the gascooler or as a gas bypass valve with backpressure regulation in transcritical or subcritical applications.
Features:
• Designed for CO2 systems with maximum
working pressure of 140 bar / 2030 psig with steel connections
• Designed for CO2 systems with maximum
working pressure of 130 bar / 1885 psig (120 bar / 1740 psig for UL approval) with Bi-metal connection
• The CCMT Light is compatible with oil types PAG and POE
• All-in-one function module ensures optimum regulating accuracy, particularly at part load
• Patented cone and balance design
• The PTFE (TFM) seat provides excellent valve tightness
• Steel connections with combined butt weld, sleeve welding and brazing
• Unique bi-metal solder connections requiring small amount of heat
• MOPD up to 90 bar / 1305 psi
• Integrated M12 male connector for simple and ‚exible connection to the motor driver
• Low weight and compact design
• Easy to service from the top by removing a single function module insert
• For manual operation and service of the CCMT an AST-g service driver is available
AI334224263620en-000201
Electric regulating valves, Type CCMT 3L, 5L, 8L and 10L
Portfolio overview
Related products
Table 1: Portfolio overview
Superheat controller / driver, |
Superheat controller / driver, |
Electronic driver type AK-PC |
Electronic driver type AK-PC |
Electronic driver type AK-XM |
type EKE 2U |
type EKE 1P |
572 |
7XX |
208C (1) |
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(1)Please refer to CCMT Light installation guide for correct valve insulation recommendation related to usage of electronic driver type AK- XM-208C.
© Danfoss | Climate Solutions | 2021.03 |
AI334224263620en-000201 | 2 |
Electric regulating valves, Type CCMT 3L, 5L, 8L and 10L
Applications
Application 1 and 2
The CCMT Light valve is developed for transcritical CO2 applications. The CCMT valve can be used in systems with ‚ash gas bypass, parallel compression as well as in stand-alone applications.
The CCMT Light valve can be used in transcritical and subcritical conditions.
CCMT Light valves are typically used for liquid expansion and as ‚ash gas bypass and high pressure regulation.
Figure 1: Application
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AKS 11 |
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GC |
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AK-PC 572 |
EKE 1P |
EKE 1P |
EKE 2U |
CCMT L |
AKS 2050AKS 11 |
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DGS |
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AKS 2050 |
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AKS 21 |
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CCMT L |
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FC 103 |
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AKS 11 |
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AKS 2050 |
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AK-SM 800A |
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AK-CC55 |
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AKVP |
AKS 11 |
AKS 2050 |
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DGS |
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AKS 11 |
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FC 103 |
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AK-CC55 |
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AKS 11 |
AKS 2050 |
AKS 11 |
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AKVP |
AKS 2050 |
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DGS |
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HP High Pressure (120-140 bar)
HP Receiver Pressure (60-90 bar)
LP Suction Pressure MT (45-55 bar)
LP Suction Pressure LT (25-30 bar)
Application 1 - High Pressure Valve (HPV)
The function of the high pressure valve is to control the high pressure in the system according to the reference from the controller. The reference can be set to obtain the optimum COP, optimum capacity or any other factors. Pressure optimization is performed by the CCMT valve, which is installed at the outlet of the gas cooler (see the €gure above) and a matching Danfoss controller. This design provides the possibility to optimize gas cooler pressure in all situations and intermediate receiver pressure independently.
Please refer to the www.danfoss.com/CO2 for more information on CO2 systems.
Application 2 - Gas bypass Valve (GPV)
A gas bypass valve is typically used to regulate the intermediate pressure in a transcritical CO2 refrigeration system, in order to keep the intermediate pressure low. By venting ‚ash gas generated through a gas bypass valve to the suction side of the compressor after the transcritcal expansion, the pressure can be kept at a safe level for all components situated in the liquid lines of a transcritical CO2 system . The two phase mixture from the CCMT valve has to be separated before gas enters the gas bypass. For use in the gas bypass applicaton the Danfoss AK controllers are recommended.
© Danfoss | Climate Solutions | 2021.03 |
AI334224263620en-000201 | 3 |
Electric regulating valves, Type CCMT 3L, 5L, 8L and 10L
Application 3
Figure 2: Application
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AKS 11 |
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GC |
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AK-PC 782A |
AK-XM |
CCMT |
AKS 2050AKS 11 |
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DGS |
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AKS 21 |
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AKS 2050 |
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AKS 2050 |
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CCMT |
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FC 103 |
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AKS 11 |
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AK-CC55 |
EKE 2U EKE 1P |
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AKS 2050 |
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AK-SM 800A |
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CCMT L |
AKS 11 |
AKS 2050 |
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DGS |
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AKS 11 |
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AK-CC55 |
EKE 1P |
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FC 103 |
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CCMT L |
AKS 11 |
AKS 2050 |
AKS 11 |
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AKS 2050 |
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DGS |
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HP High Pressure (120-140 bar)
HP Receiver Pressure (60-90 bar)
LP Suction Pressure MT (45-55 bar)
LP Suction Pressure LT (25-30 bar)
Application 3- Expansion Valve (EEV)
A stepper expansion valve CCMT Light is typically used for injection in plate heat exchangers and as an expansion valve for air CO2 evaporators.
© Danfoss | Climate Solutions | 2021.03 |
AI334224263620en-000201 | 4 |
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