IA Series

ISO A couplers made to the ISO 7241:2023 Series A Standard

AKJia’s IA Series ISO A couplers are the ideal choice where a tough, durable product of superior quality is required. They are perfectly suited to agricultural and industrial applications.


  • Carbon steel with trivalent plating
  • Zinc Nickel Plating is an option
  • Fitted with Nitrile seals (NBR), FKM option
  • Also available in stainless steel (See IAS Series)
Datasheet Inquiry
IA ISO A Quick Couplings2

Online Shop for Personal users and buy samples for your project

Personal users can buy the products on our shop, also the business customers can buy the samples, and don’t forget to register the product for the 1-year warranty.


  • Optional zinc nickel plating provides corrosion resistance (500 hours with no red rust in salt spray tests)
  • Poppet valves have balanced springs
  • The locking ball system allows quick connection
  • Bidirectional flow


  • Agricultural
  • Mobile
  • Construction
  • General industrial
IA Series ISO A Quick Coupling Dimensions drawings


ISO7241 is a standard for ball lock quick connectors. The standard mainly stipulates two types of quick connectors. This quick connector complies with the dimensional standards of ISO 7241 Series A.

ISO 7241:2023

Available Seals and Temperature Range

All carbon steel products have Nitrile Butadiene Rubber (NBR) seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) (FKM) seals fitted as standard. Special seal materials are available on request.

Abbreviation Trade Name Chemical Name Min. Temp Max. Temp
NBR, XNBR Chemigum®,  Hycar8,  Breon®,  Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® Nitrile Butadiene Rubber
Carboxylated Nitrile Rubber
-40ºC (-40ºF) 106ºC (223ºF)
FKM(FPM) Dai-el®, Fluorel®, Tecnoflon®, Viton® Fluoro-elastomer Rubber -20ºC (-4ºF) 200ºC (392ºF)
EPR, EPDM Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® Ethylene Propylene Copolymer
Ethylene Propylene Terpolymer
-50ºC (-58ºF) 120ºC (248ºF)
FVMQ Silastic 1S®, FSE® Fluorosilicone Rubber -65ºC (-85ºF) 170ºC (338ºF)
FFKM Perlast®, Kalrez®, Chemraz®, Kaflon® Perfluoroelastomer -25ºC (-13ºF) 300ºC (572ºF)