ISO 6804:2023

Overview

ISO 6804:2023 - Rubber and plastics inlet hoses and hose assemblies for washing‑machines and dishwashers - Specification - defines safety, dimensional and performance requirements for inlet hoses and hose assemblies used on domestic washing machines and dishwashers. The standard covers three hose types for connection to the domestic water supply at pressures up to 1 MPa (10 bar) and specifies materials, construction, testing and marking requirements to ensure reliable operation under expected temperatures and pressures.

Key topics and technical requirements

• Hose classification and temperature limits
  • Type 1: rubber hoses for unheated/medium-temperature supply - up to 70 °C, max working pressure 1 MPa (10 bar).
  • Type 2: rubber hoses for heated/high-temperature supply - up to 90 °C, max working pressure 1 MPa (10 bar).
  • Type 3: plastics hoses for unheated/low-temperature supply - up to 60 °C, max working pressure 0.8 MPa (8 bar).
• Materials & construction
  • Linings: rubber (types 1 & 2) or thermoplastics (type 3).
  • Reinforcement: natural or synthetic textile.
  • Covers: ozone-resistant rubber (types 1 & 2) or weather‑resistant thermoplastics (type 3); stainless‑steel braid allowed as alternative.
• Dimensions and tolerances
  • Preferred bores for type 1/2: 10 mm and 12.5 mm; type 3 inside diameters and wall thicknesses specified with tolerances.
  • Concentricity limit: ≤ 0.3 mm (measured per ISO 4671).
• Performance and safety testing
  • Hydrostatic proof pressure and burst tests (per ISO 1402) with defined proof and burst pressures (e.g., type 1 & 2 proof 1.5 MPa, burst 3 MPa).
  • Bending and flexing tests (ISO 10619-1, ISO 23529) including low‑temperature and extended flexing cycles.
  • Kinking resistance, ozone/weathering resistance, hydraulic impulse testing, adhesion and post-ageing hydrostatic tests (ageing per ISO 188).
• Marking, test certificates and packaging
  • Requirements for marking, test certificates and recommended storage/packaging ensure traceability and conformity.

Practical applications and users

ISO 6804:2023 is intended for:

• Manufacturers of inlet hoses and hose assemblies for washing machines and dishwashers.
• Appliance OEMs and assembly houses selecting compliant hose suppliers.
• Test laboratories and conformity assessors performing hydrostatic, flexing and ageing tests.
• Regulatory bodies and procurement teams specifying product safety and performance for domestic water connections.

Note: national requirements for hoses conveying drinking water or for specific hose fittings may also apply.

Related standards

• ISO 1402 (hydrostatic testing)
• ISO 10619‑1 (bending tests)
• ISO 188 (ageing/heat resistance)
• ISO 4671 (dimensional measurement)
• ISO 1307 (hose sizes and tolerances)

ISO 6804:2023 helps ensure durable, safe inlet hoses for household appliances by combining material, dimensional and rigorous performance test requirements for real‑world domestic water supplies.