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        Parker Fittings接头 
  Pneumatic Fittings 
  Pneumatic Adjustable Non-Return Valves in Nickel-Plated Brass 
           These nickel-plated brass adjustable non-return valves, suitable for harsh environments, allow compressed air to flow in one direction and prevent flow in the other.This product incorporates precise adjustment of opening pressure for greater flexibility  
            
            
            
           These nickel-plated brass adjustable non-return valves, suitable for harsh environments, allow compressed air to flow in one direction and prevent flow in the other.  
           
  This product incorporates precise adjustment of opening pressure for greater flexibility.  
   
  Features/Benefits:  
   
  - Robust  
  - Excellent resistance to abrasion and corrosion  
  - Developed for the food process industry  
   
  - Optimised Inventory Management  
  - A single valve for multiple opening pressure settings  
  - Limits the number of versions  
  - Flexibility of use  
   
  - Protection & Safety  
  - Maintains downstream pressure if upstream pressure drops  
  - Designed with locking nut to protect initial setting in the event of:  
  Vibration  
  Intensive use  
  Accidental handling  
  - Adjustment and locking of the non-return valve cracking pressure with two different Allen keys prevents the settings from being accidentally changed  
  - Smooth external profile to facilitate cleaning in situ  
  - Maximum constant flow guaranteed whatever the setting of the cracking pressure  
   
   
  Markets:  
   
  - Machine Tools  
  - Food and Beverage  
  - Printing and Marking Equipment  
  - Industrial Chemical Processing  
  - Wearing Apparel  
  - Vehicle Assembly Facilities  
   
  Applications:  
   
  - Pneumatic Circuits Protection  
  - Suitable for Compressed Air in Harsh Environments  
   
  Technologies:  
   
  - Function fitting  
  - Pneumatic system  
  - Pneumatic fittings  
  - Control valve  
  - Pressure regulating valve  
  - Pressure regulator valve  
   
  Technical Characteristics:  
   
  - Fluids: Compressed Air  
  - Materials: FDA chemical nickel-plated brass, NBR, brass, chemical nickel-plated brass, stainless steel, FKM, silicone-free  
  - Pressure: Vacuum to 12 bar  
  - Temperature: -20°C to +80°C  
   
  Regulations:  
   
  - DI: 2002/95/EC (RoHS)  
  - RG: External Components: 21CFR (FDA) (seal: § 177.2600, nickel: §184.1537, grease: NSF H1)  
  - RG: 1935/2004 (external surface flow = 0.02 litre per hour)  
  - DI: 2006/42/EC (external surface Ra  
            
            
            
          Technical Specifications 
          
            
              | Application:  | 
              Compressed Air/Inert Gas, Automotive Process, Pneumatics, Semiconductors, Packaging, Manufacturing equipment, Vaccum, Various  | 
             
            
              | Minimum Operating Temperature:  | 
              -20 °C, -4 °F  | 
             
            
              | Maximum Operating Pressure:  | 
              12 bar, 174 psi, 1,2 MPa  | 
             
            
              | Maximum Operating Temperature:  | 
              176 °F, 80 °C  | 
             
            
              | Specifications Met:  | 
              DI: 2002/95/EC (RoHs) - RG: 21CFR (FDA) - RG: 1935/2004 - DI: 2006/42/EC (Machine Directive) - DI: 1907/2006 (REACH), DI: 2002/95/EC (RoHS), RG: External Components: 21CFR (FDA), (seal: § 177.2600, nickel: §184.1537, grease: NSF H1), RG: 1935/2004 (external surface fl ow ? 0.02 litre per hour), DI: 2006/42/EC (external surface Ra < 0.8 μm), RG: 1907/2006 (REACH)  | 
             
            
              | Materials of Construction:  | 
              Nickel Plated Brass, Rubber  | 
             
            
              | Connection Type:  | 
              Push-to-Connect/Thread  | 
             
            
              | Shape:  | 
              Straight  | 
             
            
              | Nut Material:  | 
              BRASS  | 
             
            
              | O-Ring Material:  | 
              FKM  | 
             
            
              | Quantity per Box:  | 
              5 to 10  | 
             
            
              | Weight:  | 
              0,033 to 0,171 kg  | 
             
            
              | Media:  | 
              Compressed air  | 
             
           
            
          Pneumatic Adjustable Non-Return Valves in Nickel-Plated Brass 型号 
          
            
              | Part  | 
              Shape  | 
              Connection 1 Thread Style  | 
              Connection 1 Thread Size (metric)  | 
             
            
              | 7930 10 10  | 
              Adjustable check valve female  | 
              BSPP  | 
              G1/8  | 
             
            
              | 7930 13 13  | 
              Adjustable check valve female  | 
              BSPP  | 
              G1/4  | 
             
            
              | 7930 17 17  | 
              Adjustable check valve female  | 
              BSPP  | 
              G3/8  | 
             
            
              | 7930 19 19  | 
              Adjustable check valve female  | 
              Metric  | 
              M5x0,8  | 
             
            
              | 7930 21 21  | 
              Adjustable check valve female  | 
              BSPP  | 
              G1/2  | 
             
            
              | 7931 10 10  | 
              Adjustable check valve supply male / female  | 
              BSPP  | 
              G1/8  | 
             
            
              | 7931 13 13  | 
              Adjustable check valve supply male / female  | 
              BSPP  | 
              G1/4  | 
             
            
              | 7931 17 17  | 
              Adjustable check valve supply male / female  | 
              BSPP  | 
              G3/8  | 
             
            
              | 7931 21 21  | 
              Adjustable check valve supply male / female  | 
              BSPP  | 
              G1/2  | 
             
            
              | 7932 10 10  | 
              Adjustable check valve exhaust male / female  | 
              BSPP  | 
              G1/8  | 
             
            
              | 7932 13 13  | 
              Adjustable check valve exhaust male / female  | 
              BSPP  | 
              G1/4  | 
             
            
              | 7932 17 17  | 
              Adjustable check valve exhaust male / female  | 
              BSPP  | 
              G3/8  | 
             
            
              | 7932 21 21  | 
              Adjustable check valve exhaust male / female  | 
              BSPP  | 
              G1/2  | 
             
           
            
            
            
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