DM Compressor - High-performance Screw Compressor
Why Choose DM COMPRESSOR
DM Compressor stands as a leading production base for high-performance refrigeration equipment in China.
Energy-saving Screw Compressor Solutions
Providing Professional Refrigeration Solution For Your Business
High-efficiency Scroll Compressor Solutions
SCROLL COMPRESSOR
SCREW COMPRESSOR
SEMI HERMETIC RECIPROCATING COMPRESSOR

DM Compressor

Your Reliable Source for Precision-Engineered Cooling Solutions
Zhejiang Daming Refrigeration Technology Co., Ltd. is a technical private enterprise specialized in the research, design, produce and market of refrigeration compressors and refrigeration units. It owns an excellent technical team and more than 30 years of experience in compressor manufacturing. 

Solutions & Applications

Industrial & Chemical Cooling

Applications: Chemical process cooling, pharmaceutical storage, petrochemical refrigeration.
Key Features: Corrosion-resistant materials, compatibility with NH3/CO2 refrigerants, and explosion-proof options for hazardous environments.
Industries: Chemical plants, pharmaceuticals, oil & gas.

Medical & Laboratory Refrigeration

Applications: Vaccine storage, blood bank cooling, laboratory freezers.
Key Features: Precision temperature control (±1°C), ultra-low temperature (-80°C) models, and compliance with medical safety standards.
Industries: Healthcare, biotech, research facilities.

DM Compressor

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FAQ

  • danfoss compressor -nomenclature



    Example
    L LZ 013 T 4 L Q 9 B
    1 2 3 4 5 6 7 8 9
    Explaination
    1 Application L: Low temprature, M: Medium temperature
    2 Refrigerant LZ:R404A,R507,R452A,R448A,R449A,R454C,R455A
    3 Nominal capacity BTU/H@60HZ    013: 013*1000=13000BTU
    4 Model Variation Design for refrigeration
    5 Motor Voltage  2: 200-220v/3ph@50hz & 208~230v/3ph@60hz
    4:380-415v/3ph@50hz &460v/3ph@60hz
    9:380v/3ph@60hz
    6 Motor protection L: internal motor protection
    7 connection Q: rotolock connections,screw terminals
    P: Brazed connections, Spade terminals
    C: Brazed connections, screw terminals
    T: Rotolock connections,screws terminals
    8 configuration Code Oil sight glass Oil equalisation Oil drain LP gauge port Gas Equalisation port
    9 Threaded None Schrader None None
    9 Oil charging Blank: PVE oil                  B: POE oil

    danfoss compressor information

    https://www.dm-compressor.com/Danfoss-compressor-info-id49960065.html 
  • Bitzer compressor -nomenclature

    As the heart of a refrigeration system, the proper selection of the compressor is crucial for the system's efficient operation.
    DMZL will analyze the naming conventions of mainstream compressors on the market to help you understand the information
    contained in compressor model numbers.

    Part1 Bitzer reciprocating compressor



     

    Example


    4 N E S - 20 Y - 40P

    1 2 3 4
    5 6
    7
    Explanation
    1 Number of compressor cylinder
    "4"= 4 cylinder
    2 Code of bore*stroke
    3 E=Ecoline series
    4 S=Centrifugal lubrication
    Blank= Pump lubrication
    5 Motor size
    6 Y = compressor charing polyolester oil
    7 Motor code



    Bitzer compressor innformation

    https://www.dm-compressor.com/Bitzer-Semi-Hermetic-Compressor-Informarion-id47094065.html


  • Hanbell compressor -nomenclature RC2 series


    Hanbell compressor 

    I. RC2 Series (Semi-Hermetic Single-Stage Screw Refrigeration Compressor)
    Example
    RC 2 - 260 B - Z (P)
    1 2
    3 4
    5 6
    Explanation
    1 Product Series:Semi-Hermetic Screw Refrigerantion Compressor
    2 Generation:  2nd Generation (Mainstream)
    3 Displacement:  Theoretical Displacement at 50Hz (m³/h)
    4 Motor Code:  A=Special for R134a; B=Universal (R22/R404A/R407C, etc.)
    5 Working Condition:  Z=Medium Temperature; W=Low Temperature; G=High Temperature Heat Pump; T=Ultra-High Temperature Heat Pump
    6 Configuration:  P=Parallel Machine/Side Discharge Without Filter Oil Separator; No P=Single Machine Standard

    II. RE Series (High-Efficiency Single-Stage Screw Refrigeration Compressor)
    Example
    RE - 620 B (P)
    1
    2 3 4
    Explanation
    1 Product Series:   High-Efficiency Air Conditioning/Refrigeration Special Screw Compressor
    2 Displacement:   Theoretical Displacement at 50Hz (m³/h)
    3 Motor Code:   A=R134a Water-Cooled; B=R134a Air-Cooled/Heat Pump Universal
    4 Structure:   P=Side Discharge Without Filter Oil Separator; No P=Standard
    Additional W/FW W=Water-Cooled; FW=Flooded Water-Cooled
    Additional H/FH H=Air-Cooled; FH=Flooded Air-Cooled



    Part2 products info

    https://www.dm-compressor.com/Hanbell-compressor-specification-id41738855.html

  • Copeland scroll compressor -nomenclature

    Daming Refrigeration will help you decipher the hidden parameters in Copeland compressor models.

    Part 2 Copeland scroll compressor 


    Example

    Z R 81 K C E - T F D - 522

    1 2 3 4 5 6
    7 8 9
    10
    Explanation
    1 Z=scroll compressor, V = China mainland scroll compressor
    2 R=air conditioning /B= Refrigeration high & mid temperature/F=low temperature with liquid injection port
    P= air conditioning R410A
    3 Cooling capacity BTU/H at working condition ARI(60HZ)   HT:7.2°C/54.4°C      MT:-6.7°C/48.9°C   LT-31.7°C/40.6°C
    4 coefficient  K=*1000/M=*10000
    5 Updated version code
    6 Luricant type, E=POE oil/ blank= mineral oil 
    7 Motor type , T= three phase / P=single phase 
    8 Motor protection,   F= internal projection, W= module 
    9 Power supply ,
    C=200-220V@50HZ or  208~230V@60HZ  / D=380~420V@50HZ or 460V@60HZ
    E=575V@60HZ   / J=220~240V@50HZ or 265V@60HZ  /P=380V@50HZ     /  7=380V@60HZ
    10 Configuration code
    522: soldering /fix speed /with mounted feet
    523: flaring /without sight glass
    420: soldering / tandem/ without mounted feet
    422: soldering /tandem /with mounted feet
    433: soldering /digital tandem/without mounted feet
    550: soldering /with sight glass
    551: flaring/ with sight glass


    Copeland scroll compressor info
    https://www.dm-compressor.com/Copeland-Compressor-Information-id42048855.html
  • Get to know refrigeration reciprocating compressor

     
    In the refrigeration industry, reciprocating refrigeration compressors (piston compressors) have stood the test of time with their mature technology and stable performance, becoming the "reliable backbone" of small and medium-sized refrigeration systems. Whether you are running a small cold storage, a convenience store’s freezer, or a medium-sized industrial refrigeration unit, reciprocating compressors can bring you reassuring performance and cost-effective solutions.

    What makes reciprocating compressors irreplaceable?

    First, their mature technology ensures ultra-stable operation – after decades of technical iteration, the structure of piston, cylinder and valve has been optimized to the extreme, with low failure rate and easy maintenance, which can greatly reduce your later operation and maintenance costs.

    Second, they have strong adaptability to working conditions, especially in low-temperature scenarios (such as -30℃ cold storage), they can still maintain efficient operation, which is unmatched by many other types of compressors.

    In addition, their cost performance is outstanding, whether it is equipment purchase or later maintenance, they can help you control costs while ensuring refrigeration effect.

    When choosing reciprocating compressors, mainstream brands are your best guarantee.

    Copeland: with its reliable quality and energy-saving and environmental protection advantages, has become the first choice for many enterprises;
    Bitzer, as a global leader in low-temperature refrigeration, has professional technology and global reputation, perfectly adapting to harsh low-temperature working conditions;
    Danfoss’s products are famous for high energy efficiency and wide applicability, which can match various refrigeration systems;
    Embraco’s compact design is very suitable for small equipment such as household freezers;
    Bristol Compressors is cost-effective and stable in operation, which is a cost-saving choice for small and medium-sized enterprises;
    Chinese Brand(DMZL,REFCOM..., with independently developed technology and the most affordable price, has become a rising star in the market, providing high-quality choices for cost-sensitive customers.


    For scenarios that pursue stability, cost-effectiveness and adaptability to low temperature, reciprocating refrigeration compressors are definitely the most reliable choice. Choose the right brand, and let the mature technology escort your refrigeration business.

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