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  • Model QRF134aW Thermall Expansion Value

    • Product Description

    • Product Model

    • Technical Parameters

    • Product Description:

      · QRF134aW型膨脹閥用于調節蒸發器中液體制冷劑的供給量
      · QRF134aW型膨脹閥具有雙向節流功能,被廣泛運用在熱泵、汽車空調制冷系統
    • Product Model:

      Refrigerant Model Pressure Balance Thread(Connection Size) Nominal Refrigerating Capacity
      Inlet Outlet Outside Balanced End TR KW
      R134a QRF134aW-2.5-3-4 Outside Balanced End 3/8SAE 1/2SAE 1/4SAE 2.5 8
      QRF134aW-3.5-3-4 3.5 12
      QRF134aW-4.5-5-6 5/8SAE 3/4SAE 4.5 17
      QRF134aW-7-5-6 7 24
      QRF134aW-10-5-6 10 37

      ·The working condition of nominal refrigerating capacity is: evaporating temperature 5; condensing temperature 35superheating degree 3.5; supercooling degree 4

      ·Other refrigerants can be customized based on clients' requirements

    • Technical Parameters:

      Applicable Refrigerants: R134a
      Applicable Medium Temperature: -30℃~+10℃
      Maximum Working Pressure: 2.0MPa
      Maximum Testing Pressure: 3.0MPa
      Adjustable Range of Superheat: 2℃~8℃

      · Capillary length of QRFW-type thermostatic expansion valve:1.5m in atandard; under special situation,it can be customized based on clients' requirements.


      1、gas tank head piece; 2、dust cap; 3、valve body; 4、value element(1#~6#); 5、regulating spring; 6、adjustment nut;  7、adjustment seat;  8、valve stem;  9、valve bonnet;  10、O-type ring;  11、gasket; 12、gasket; 13、dust cap; 14、drive rod; 15、dust cap; 16、label; 17、nut; 18、bolt; 19、hoop

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