Introduction：
Railway Vacuum Brake Hose are used in vacuum breaking systems operated at a vacuum up to 990 mbar1 and within the temperature range -25 ℃to 65 ℃.
Our offered vacuum brake hose are manufactured following the industry laid parameters and the demands of our clients. We are able to offer these vacuum brake hose in many specifications for the different requirements of our clients.
Features:
1.galvanized steel wire, corrosion and wear resistant
2.Cover: black,smooth(wrapped finish),synthetic rubber,natural rubberozone and oil resistant.
3.long service life
Applications:
1.Railway Wagons
2.Railway Coach
3.Rolling Stock
4.Locomotive
5.ect.
1．Tensile Strength: tensile strength ≥14MN/m²
2．elongation at break ≥500%
3．Adhesion: with a force of 67N shall not separate at rate of more than 25 mm/ min.
4．Ageing Resistance: Hose shall be aged for 168 H at temperature of 70+1 ℃
5．Vacuum Retention : the vacuum shall not fall off more than 170 mbar6 in 1 hour,the hose shall not shorted by more than 5% in that period.
6．Non-Kinking
7．Bending Radius
Designation of hose (mm) | Min. Bore of internal spiral(mm) | bore of soft end (mm) | distance of wire from end Min.(mm) | Diameter wire(mm) | Number of coil per meter(mm) |
12.5 | 12.5 | 21 | 51 | 2 | 110-115 |
19 | 19 | 27 | 51 | 2 | 110-115 |
25 | 25 | 33.5 | 51 | 2 | 95-102 |
32 | 32 | 41 | 51 | 2.65 | 75-82 |
38 | 38 | 48 | 51 | 2.65 | 75-82 |
51 | 51 | 59 | 51 | 3.35 | 75-82 |
63.5 | 63.5 | 76 | 51 | 3.35 | 75-82 |
76 | 76 | 89 | 63.5 | 3.35 | 75-82 |
