ISO 8066-4:2023

Rubber and plastics hoses and hose assemblies for automotive air conditioning — Specification — Part 4: Low vibration transmission type for Refrigerant 1234yf

This document specifies the requirements for rubber hoses and hose assemblies used for low-pressure application of circulating gaseous Refrigerant 1234yf (tetrafluoropropene) (hereinafter referred to as R1234yf) in the air-conditioning systems of automobiles. The hoses and hose assemblies are designed in such a way as to reduce vibration transmission between the engine room and the cabin. The operational temperature range is -40?°C to +80?°C.

Due to the critical relationship between the hose and coupling for this application, a requirement that the coupling to be used in service be used for testing is laid down.

Edition	2023
Standard Part No	4
Published Date	2023
Published By	International Standardization Organisation
Page Count	29