ISO 6806:2014 pdf download

ISO 6806:2014 pdf download.Rubber hoses and hose assemblies for use in oil burners — Specification
1 Scope
This International Standard specifies the minimum requirements for rubber hoses and hose assemblies for use in oil burners.
The following two types of hose assembly are specified.
— Type 1: Hose assemblies for flux and reflux, but not for insertion between the oil burner pump and the atomizing connection; maximum working pressure 1,0 MPa (10 bar); maximum oil temperature 100 °C.
— Type 2: Hose assemblies for insertion between the oil burner pump and the atomizing connection;
working pressure 4,0 MPa (40 bar); maximum oil temperature 100 °C.
NOTE The hose assemblies specified in this International Standard are not intended to be used, without special assessment, for purposes other than oil burner installations.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hoses
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1436, Rubber hoses and hose assemblies — Wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies
ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 10619-2:2011, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —Part 2: Bending tests at sub-ambient temperatures
3 Construction
Hoses in accordance with this International Standard shall consist of either:
a) an internally smooth rubber lining and an external corrosion-resistant metal braid; or
b) an internally smooth rubber lining, a reinforcement consisting of one or more layers of textile or corrosion-resistant metal braid and a rubber outer cover.
The hoses shall be fitted with permanently attached couplings.
Both the couplings and the metal braid shall be provided with suitable corrosion protection. The metals used shall not have any deleterious effects on the rubber components.
4 Dimensions and tolerances
4.1 Inside diameter
The inside diameter of the hose shall be in accordance with the nominal dimensions and tolerances given in Table 1, which is in accordance with ISO 1307.