IAS Series

Stainless steel ISO A couplers made to the ISO 7241:2023 Series A Standard dimensions

AKJia’s IAS series stainless steel ISO A couplers incorporate all the benefits of the carbon steel IA Series couplers while being perfectly suited for corrosive fluids and environments.


  • AISI 304 Stainless Steel, and also available 316 stainless steel
  • Fitted with Viton seals – FKM (Other seals available on request)
  • Also available in carbon steel (See IA Series)
Datasheet Inquiry
IAS Series ISO A Stainless steel Quick Couplings


  • Poppet valves have balanced springs
  • The locking ball system allows for quick connection
  • Bidirectional flow


  • Corrosive fluids and environments
  • Marine
  • Oil and gas
  • Chemical
  • Pharmaceutical
  • Nuclear
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. The stainless steel material quick coupling only complies with the dimensional requirement of the 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)