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          Parker 快速接头和附件 
  Parker Quick Couplings and Accessories 
  Parker Quick Couplings 
  Swivelling double nipple, Series DN 
           Swivelling double nippel with nominal diameter 5/12/16 for railway applications up to 12 bar. Available made of steel.  
           Parker's series DN is a swivelling double nipple with a very robust low temperature polyurethane seal to guarantee a long service life. By this swivelling double nipple, the hoses are not contorted or twisted - this means that the hoses have a longer service life.  
               
  Markets:  
  - Railway  
   
  Features/Benefits:  
  - Special NBR seal for low temperature applications up to -50°C  
  - Minimal pressure drop – equal to a steel tube  
  - Much longer life time of the hose  
   
  Applications:  
  - Pneumatic Braking Systems  
  - Pneumatic Applications  
            
          Technical Specifications 
          
            
              | Connection 1 Thread Size:  | 
              18x1,5 up to 30x2  | 
             
            
              | Connection 2 Thread Size:  | 
              3/8, 1/2 inch, 16x1,5, 26x1,5, 30x2  | 
             
            
              | Hex Size 1:  | 
              19, 30, 36 mm  | 
             
            
              | Hex Size 2:  | 
              24, 27, 19, 32, 36 mm  | 
             
            
              | Length:  | 
              57,5 up to 75,5 mm  | 
             
            
              | Materials of Construction:  | 
              Steel  | 
             
            
              | Seal Material:  | 
              EPDM and Cryogenic-PU  | 
             
            
              | Minimum Operating Temperature:  | 
              -50 °C  | 
             
            
              | Maximum Operating Temperature:  | 
              120 °C  | 
             
            
              | Maximum Operating Pressure:  | 
              12 bar  | 
             
            
              | Application:  | 
              Railway  | 
             
           
            
          Swivelling double nipple, Series DN 型号 
          
            
              | Part  | 
              Size  | 
              Connection 1 Style  | 
              Connection 2 Style  | 
             
            
              | DN16/16SZS  | 
              L10  | 
              ISO 8434-1 series L external thread  | 
              ISO 8434-1 series L with O-ring and nut  | 
             
            
              | DN17/18SZS  | 
              L12  | 
              ISO 8434-1 series L external thread  | 
              ISO 228 with O-ring on the front  | 
             
            
              | DN21/26SZS  | 
              L18  | 
              ISO 8434-1 series L external thread  | 
              ISO 228 with O-ring on the front  | 
             
            
              | DN26/26SZS  | 
              L18  | 
              ISO 8434-1 series L external thread  | 
              ISO 8434-1 series L with O-ring and nut  | 
             
            
              | DN30/30SZS  | 
              L22  | 
              ISO 8434-1 series L external thread  | 
              ISO 8434-1 series L with O-ring and nut  | 
             
           
            
            
            
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