Safety Coupler (Self Lock / Air Breathing)
SERIES 21 KS & 21 KR - Automatic Single Shut-Off & Automatic Straight-Thru - NOMINAL PLUG BORE .20"
   
   


Specifications:
  • Working Temperature: depending on medium
    -4F up to +210F (NBR)
    -40F up to +250/300F (EPDM)
    +5F up to +400F (FKM)
    +32F up to +600F (FFKM)
    At a temperature below -4F and above +300F special seals are available.
  • Working Pressure: 500 psi, maximum static working pressure with 4:1 design factor.

Note:
  • Metric male (DIN 2353) & female threads and BSP male & female threads are available upon request.
  
  
Features Product Details Technical Info

   
Similar to the 21KA Series except with an additional safety locking system. When being disconnected, the plug must first be pushed further into the coupler before it can be disconnected. This prevents unintentional disconnection. This series is also available without a valve in a Straight-Thru design. For Straight-Thru Couplers, please change the part number from 21KS to 21KR when ordering.
 
 


Material
 
COUPLER   STANDARD
MATERIAL
  NICKEL
PLATED
Back Body Brass Brass,
Nickel Plated
Valve Body Brass Brass,
Nickel Plated
Sleeve Brass Brass,
Nickel Plated
Valve Brass Brass
Spring & Locking Ring AISI 301 AISI 301
Locking Balls AISI 420 AISI 420
Seals NBR NBR
PLUG Brass Brass,
Nickel Plated
 
 
 
 
 
Safety (Safety Lock / Air Breathing) Coupler
        
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