ISO 23384:2021

Overview

ISO 23384:2021 is an international specification for rubber and plastics hoses and hose assemblies that are wire- or textile-reinforced and have a working pressure equal to or above 70 MPa (700 bar). It defines classification, construction, performance and testing requirements for nominal sizes from 3.2 to 25, and covers hoses intended for hydraulic and high-pressure water applications (including water jetting and water blasting). The standard addresses hose performance (not end fittings) and replaces ISO 19385:2017.

Key topics and technical requirements

• Scope and classification
  • Two hose types by burst-to-working-pressure ratio: Type A (4:1) and Type B (2.5:1, or ≥2:1 for ≥300 MPa).
  • Multiple hose classes defined by maximum working pressure and applicable nominal sizes.
• Fluid and temperature compatibility
  • Suitable for oil-based hydraulic fluids (HH, HL, HM, HR, HV) at −40 °C to +100 °C.
  • Water-based fluids (HFC, HFAE, HFAS, HFB) and water at 0 °C to +70 °C.
  • User/manufacturer responsibility to confirm fluid compatibility.
• Performance and testing requirements
  • Hydrostatic testing, proof pressure hold, and hydraulic-pressure impulse tests.
  • Resistance tests: cold flexibility, ozone resistance, abrasion, adhesion (rubber hoses), tensile force, and fluid resistance.
  • Dimensional checks (diameters, concentricity), minimum bend radius, change-in-length/length-change behavior, and leakage criteria for assemblies.
• Safety and hazards
  • Identifies hazards from bursting, connector failure, operator error, and hose whip (sudden length change).
• Documentation and marking
  • Requirements for designation, marking, test certificates, packing and storage recommendations.

Applications and practical value

ISO 23384 is directly applicable to:

• High-pressure hydraulic systems in industry and mobile equipment.
• Water jetting and water blasting systems that require hoses rated ≥700 bar.
• Manufacturers designing or certifying wire/textile-reinforced hoses and hose assemblies.
• Test laboratories performing compliance tests and quality control.
• Procurement, maintenance, and safety engineers who need clear performance and marking requirements to select appropriate high-pressure hoses.

Using ISO 23384 helps ensure reliable hose performance under extreme pressure, reduces risk of failure (bursting, whip), and supports consistent testing and documentation for high-pressure hose products.

Related standards

Relevant referenced standards include ISO 6743-4 (fluid classification), ISO 1402 (hydrostatic testing), ISO 6803 (impulse testing), ISO 7326 (ozone resistance), ISO 8031 (electrical resistance), ISO 8033 (adhesion), ISO 8330 (vocabulary), ISO 10619 series (flexibility tests), and ISO 16301 (alternative for some hydraulic jacks).