1 Scope
This standard specifies the types, dimensions, technical requirements, test methods, marking, inspection and packaging, transportation and storage of air conditioning hoses and hose assemblies for transporting liquid or gaseous HFC-134a refrigerant for vehicle air conditioning system.
This standard is applicable to rubber or thermoplastic hoses and hose assemblies for transporting liquid or gaseous HFC-134a refrigerant for vehicle air conditioning system. The design of the hose shall minimize the permeation of HFC-134a and environmental pollution, and may be used within the temperature range of -40~+125℃.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, all editions cited are valid. All standards are subject to revision, and all parties using this standard are encouraged to investigate the possibility of applying the latest editions of the following standards.
GB/T 1690-1992 Rubber, vulcanized－Determination of the effect of liquids
GB/T 2941-1991 Rubber - Standard temperatures, humidities and times for the conditioning environmental and testing of test pieces
3 Types
3.1 Types A1 and A2 - fabric reinforced synthetic rubber hoses
Foreword i
1 Scope
2 Normative references
3 Types
4 Technical requirements
5 Test methods
6 Marking
7 Inspection, packaging, transportation and storage
