BS EN 854:2015 pdf download

05-03-2021 comment

BS EN 854:2015 pdf download.Rubber hoses and hose assemblies – Textile reinforced hydraulic type – Specification.
BS EN 854 specifies requirements for three types of textile reinforced rubber hoses and hose assemblies of nominal bore from 5 to 100. The types are defined in Clause 3.
They are suitable for use with:
— hydraulic fluids in accordance with ISO 6743-4 with the exception of HRD R, HFD S and HFD at temperatures ranging from -40 °C to 100 °C;
— water-based fluids at temperatures ranging from -40 °C to +70 °C;
— water at temperature ranging from 0 °C to +70 °C.
The European Standard does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies.
NOTE 1 The hoses are not suitable for use with castor oil based and ester based fluids.
NOTE 2 Hoses and hose assemblies are not be operated outside the limits of this standard.
NOTE 3 Requirements for hydraulic hoses for underground mining are standardized in separate standards.
4 Materials and construction
4.1 Hoses
Hoses shall consist of an oil and water resistant synthetic rubber lining, one or more layers of textile yarn and an oil and weather resistant synthetic rubber cover.
4.2 Hose assemblies
Hose assemblies shall only be manufactured with those hose fittings whose functionality has been verified in accordance with subclauses 6.1, 6.3, 6.4 and 6.5 of this European Standard.
5 Dimensions
5.1 Diameters and concentricity
When measured in accordance with EN ISO 4671, the diameters of the hoses shall conform to the values given in Table 1.
6 Requirements
6.1 Hydrostatic requirements
6.1.1 When tested in accordance with EN ISO 1402, the maximum working pressure, the proof pressure and burst pressure of the hoses and hose assemblies shall conform to the values given in Table 4.
6.1.2 When tested in accordance with EN ISO 1402, the change in length of hose at the maximum working pressure shall not exceed + 2 % to – 4 % up to and including nominal bore 31 and 0 % to + 5 % above nominal bore 31.
6.2 Minimum bend radius
When bent to the minimum bend radius given in Table 5 measured on the inside of the bend, the flatness shall not exceed 10 % of the original outside diameter.
Measure the hose outside diameter with a calliper before bending the hose. Bend the hose to the minimum bend radius and measure the flatness with the calliper.

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