Parker 30 Series Pneumatic Couplings | General Purpose - Push-to-Connect

Parker 30 Series Pneumatic QC

Parker 30 Series couplers are designed for rigid mounting that allows a simple push-to-connect operation.

Constructed of a solid brass body and steel valve, 30 series couplers are noted for their high flow capability, reliability, and rugged design.

Parker 30 series couplers accept industrial interchange nipples.

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


30 Series QC Dimensions & Specifications:

Choose another GP - Push-To-Connect QC
Choose another Pneumatic QC
Go back to Product Overview


Parker 30 Series has a locking mechanism that consists of pawls (or pins) which act directly on the sleeve, thereby causing the sleeve to automatically retract when the mating nipple is inserted.

30 Series couplings are push type Single Shut-Off couplings and mate with industrial interchange design nipples. .

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

Parker 30 Series Couplings Specifications & Performance


Body Size (in.) 1/4 1/4 3/8 1/2 3/4
Rated Pressure (PSI) 300 300 300 300
Temperature Range (Std. seals)* -40° to +250° F.
Locking Device 3 pawls 4 pawls 5 pawls 6 pawls
Vacuum Data (inches Hg) Disconnected (coupler only) Connected
Not recommended
27.4 27.4 27.4 27.4


Parker 30 Series QC Pressure Drop Chart


Parker 30 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


30 Series Couplings Options

Add the suffix “N” as well as the “B” prefix to order an all brass coupler with stainless steel locking balls and springs, Example: B33N.

All-brass 30 Series Couplings should be used to avoid corrosion from moisture. Contact us for specific recommendations.


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: B33-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