Parker 50 Series Pneumatic Couplings | General Purpose - Manual Connect

Parker 50 Series Pneumatic QC Parker 50 Series couplings are interchangeable with ARO's 210 series. 50 Series couplings have a full opening tubular valve for maximum flow and a built-in sleeve guard to minimize accidental disconnect.

50 Series couplings have all brass bodies and steel valves.

Standard seals are Nitrile. Optional materials are available - contact us with questions.


50 Series QC Dimensions & Specifications:

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Common applications: compressed air, water, grease, paint, limited vacuum and limited gases.

Parker 50 Series Couplings Specifications & Performance


Body Size (in.) 1/4
Rated Pressure (PSI) 300
Temperature Range (Std. seals)* -40° to +250° F.
Locking Device 4 balls


Parker 70 Series QC Pressure Drop Chart


Parker General Purpose Pneumatic Coupling Repair Kits

The repair kits below are for Parker 10, 20, 30, 50, 70, & TL Series Pneumatic Couplings.

1/4 Nitrile 21K
1/4 Ethylene Propylene 21KW
1/4 Fluorocarbon 21KY
3/8 Nitrile 14K
3/8 Ethylene Propylene 14KW
3/8 Fluorocarbon 14KY
1/2 Nitrile 16K
1/2 Ethylene Propylene 16KW
1/2 Fluorocarbon 16KY
3/4 Nitrile 38K
3/4 Ethylene Propylene 38KW
3/4 Fluorocarbon 38KY


50 Series Couplings Options


All sizes of 10, 20, 30, 50, and 70 Series couplers can be furnished with Locking Sleeves, as illustrated.

Place suffix letters -“SL” (Sleeve-Lok) after regular catalog number. Example: B53-SL.

Orders & Quotes



When ordering quick couplers, consider the following:

  • Functional requirements of the coupling
  • Maximum working pressure of the application
  • Coupler seal & body material compatibility with the system’s fluid
  • Is the application static or dynamic?
  • Size of coupler & hose
  • Maximum allowable pressure drop
  • Requirement to connect & disconnect under pressure
  • Media temperature
  • Ambient temperature
  • End configuration requirements
  • Need for industrial interchange QC
  • Effects of air inclusion & fluid loss