Hydraulic Flexible Rubber Hose DIN EN856 4SH - High Pressure Petroleum Fluid | China Suppliers & Factory
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| I.D. (Inner Diameter) | R.O.D. (Reinforcement O.D.) | O.D. (Outer Diameter) | MAX W.P. (Working Pressure) | MIN B.P. (Burst Pressure) | MIN B.R. (Bend Radius) | WEIGHT | |||||||
| Metric | Inch | Min | Max | Min | Max | Min | Max | bar | psi | bar | psi | mm | kg/m |
| mm | mm | mm | mm | mm | mm | mm | |||||||
| 19.0 | 3/4" | 18.6 | 19.8 | 27.6 | 29.2 | 31.4 | 33.0 | 420 | 6090 | 1680 | 24360 | 280 | 1.55 |
| 25.0 | 1" | 25.0 | 26.4 | 34.4 | 36.0 | 37.5 | 39.9 | 380 | 5510 | 1520 | 22040 | 340 | 2.00 |
| 31.5 | 1 1/4" | 31.4 | 33.0 | 40.9 | 42.9 | 43.9 | 47.1 | 325 | 4714 | 1300 | 18855 | 460 | 2.46 |
| 38.0 | 1 1/2" | 37.7 | 39.3 | 47.8 | 49.8 | 51.9 | 55.1 | 290 | 4205 | 1160 | 16820 | 560 | 3.36 |
| 51.0 | 2" | 50.4 | 52.0 | 62.2 | 64.2 | 66.5 | 69.7 | 250 | 3650 | 1000 | 15600 | 700 | 4.98 |
Frequently Asked Questions
What do the terms I.D., R.O.D., and O.D. mean?
I.D. stands for Inner Diameter, which determines the flow capacity of the hose. R.O.D. stands for Reinforcement Outer Diameter, indicating the diameter over the reinforcing layer. O.D. stands for Outer Diameter, which represents the total external diameter of the hose.
How is the safety factor calculated between Working Pressure and Burst Pressure?
These hoses feature a standard 4:1 safety factor. The Minimum Burst Pressure (MIN B.P.) is four times the Maximum Working Pressure (MAX W.P.). For example, the 3/4" hose has a working pressure of 420 bar and a burst pressure of 1680 bar.
What is the significance of the Minimum Bend Radius (MIN B.R.)?
The Minimum Bend Radius is the smallest radius to which the hose can be bent without risking kinking, damaging the internal reinforcement, or restricting fluid flow. Bending the hose below the specified limit can significantly shorten its service life.
How does hose size affect the maximum working pressure?
Generally, as the hose diameter increases, the maximum working pressure it can withstand decreases. For instance, the 3/4" (19.0 mm) hose has a MAX W.P. of 420 bar, whereas the larger 2" (51.0 mm) hose has a MAX W.P. of 250 bar.
Are the pressure values provided in both metric and imperial measurements?
Yes, the specification table lists pressure ratings in both bar (metric) and psi (imperial), making it easy to cross-reference and match system requirements globally.