BS/EN 694-2014 pdf download.Fire-fighting hoses – Semi rigid hoses for fixed systems.
4 Classification
4.1 General
All types and classes of hoses shall be so flexible that they can be rolled and kept on a drum of minimum diameter 200 mm for 19 mm and 25 mm inside diameter hose and of minimum diameter 280 mm for 33 mm inside diameter hose.
Hoses shall be one of two types distinguished by their construction. Each hose type shall be further divided into dasses distinguished by the materials used for lining and cover.
4.2 ClassifIcation by types (hose construction)
Type A hoses shall consist of:
a) a seamless rubber or plastics lining;
b) a textile reinforcement with or without a rigid spiral helix;
C) a rubber or plastics cover.
Type B hoses shall consist of:
d) a seamless rubber or plastics lining;
e) a circular woven textile reinforcement with a rigid spiral helix:
f) an uncovered or rubber or plastics cover.
4.3 Classification by class (materials for lining and cover)
The hose types shall be further subdivided into six dasses dependent on the materiaEs used in the construction in accordance with Table 1.
5.2 Length and tolerances on length
The total length of hose supplied shall be stated in metres.
Tolerance on length shall be in accordance with EN ISO 1307.
6 Performance requirements of finished hose
6.1 Hydrostatic requirements
6.1.1 Deformation under maximum working pressure
The dimensional stability of the hose, when tested in accordance with EN ISO 1402, shall conform to the requirements given in Table 3. The length of the test piece shall be 1 m.
For 19 mm and 25 mm inside diameter hoses the initial test pressure shall be 0,07 MPa and the final test pressure shall be 1,2 MPa. For 33 mm inside diameter hose the initial test pressure shall be 0,07 MPa and the final test pressure shall be 0.7 MPa.
The twist shall be not greater than 30°/rn for type A. For type B the twist may be greater than 30°/rn but in this case it shall only be in a direction which closes the coupling and shall be stated in the test report.
6.1.3 Minimum burst pressure
A burst pressure test shall be carried out in accordance with EN ISO 1402 on the three test pieces used for the deformation under proof pressure test.
Each of the test pieces shall not burst at a pressure less than that given in Table 4.
It is not necessary to increase the pressure above the minimum burst value to burst the hose. It is sufficient to increase the pressure to the required minimum burst pressure stated in Table 4 in order to pass this test requirement. This should be stated in the Test Report.
6.1.4 Kink pressure
When tested in accordance with EN 15889:2011, Annex C, the test piece shall be pressurised to 1,2 MPa for
19 mm and 25 mm inside diameter hoses and at 0,7 MPa for 33 mm inside diameter hose.
There shall be no leakage or damage prior to releasing the pressure.
6.2 Adhesion
When tested in accordance with EN ISO 8033 the adhesion between all components shall be not less than
1,5 kN/m for type A hoses and 1,0 kN/m for type B hoses.
The test method shall be dependant on the construction of the hose
6.3 Accelerated ageing
The hose shall be tested in accordance with EN 15889:2011. 0.2.
After ageing, subject three test pieces to the burst pressure test as specified in 6.1.3.
The mean of the burst pressure test results shall not decrease by more than 25 % from the initial mean burst pressure value determined from the results obtained in 6.1.3.
Subject the remaining test piece to the adhesion test as given in 6.2.
The resultant adhesion of the fourth test piece shall be in accordance with the requirements of 6.2.
6.4 Low temperature flexibility
The test shall be carried out in accordance with Clause 5, Method B of EN ISO 10619-2:2011 using a mandrel of outside diameter equal to 12 times the inside diameter of the hose. After bending the hose round the mandrel through 180 for (10 ± 2) s at a temperature of (—20 ± 2) °C or lower if requested, it shall not show any signs of breaking or cracking and shall meet the proof pressure requirement given in Table 4.
6.5 Hot surface resistance
For all types and classes, when tested in accordance with EN 15889:2011, Annex H at a test temperature of (200 ± 2) °C. In none of the four tests shall leakage occur less than 60 s from the application of the filament rod or on removal of this filament rod after the specified period.
6.6 Ozone resistance
For all diameter and types of hoses when tested in accordance with EN ISO 7326:2008, 7.1, method 1, neither the inside or the cover of the hose shall show any signs of visible cracks. The lining shall be examined by slitting the hose wall.
6.7 Bending and crush resistance
When tested in accordance with EN 15889:2011, Annex K at a temperature of (23 t 2) C, the ratio 770 shall not exceed 1,20 and there shall be no visible signs of kinking.
6.8 UV-resistance (xenon arc lamp)
NOTE A test for resistance to UV and requirements based on EN ISO 30013 will be added at the revision of this standard, when more expenence has been acquired.
6.9 Loss In mass on heating
When tested in accordance with 6.2. Method B of ISO 176:2005 the lining and cover materials shall not show a loss in mass greater than 4 %.
7 Frequency of testing
Type tests and Production tests shall be carried out as detailed in Annex A.
Batch tests as given in Annex B shall be carried to control the quality of the product. They are for guidance only.BS/EN 694-2014 pdf download.