Safety factor (bursting pressure / working pressure)
| Lp | hose applications | safety factor |
| 1 | Water hoses with maximum working pressure 1 MPa (10 bar). | 3 : 1 |
| 2 | Hose for other fluids, water slurries, solid materials and water with working pressure above 1 MPa (10 bar). | 4 : 1 |
| 3 | Hoses for compressed air and other gases. | 4 : 1 |
| 4 | Hoses for fluids that may change into gases during pressure drop. | 5 : 1 |
| 5 | Rubber hoses for steam. | 10 : 1 |
| 6 | WATERBLAST hoses. | 2,5 : 1 |