The pressure resistance of rubber hose varies depending on the structure of the reinforcement layers and the combination of dimensions and thickness. Manufacturers design optimized structures to meet requirements and avoid issues such as hose rupture or leakage, which could lead to serious situations like machinery downtime. Following the standardization of mechanical equipment power output, the international standard ISO uses Working Pressure (WP) to differentiate, allowing users to select appropriate hoses based on diameter and pressure requirements. Producers can adjust material hardness, dimensions, reinforcement materials (fabric, braided yarn, wire mesh), and techniques (internal or external reinforcement) to meet customized needs for hose diameter and pressure. Additionally, when choosing working pressure, the difference between working pressure and burst pressure (BP) must be considered. Burst pressure, also known as the maximum pressure limit, indicates the pressure at which the hose will burst if exceeded. For different structured hoses, it is recommended that BP/WP be 3 to 4 times for optimal performance.
The same diameter hoses with different structural layers or materials will have different pressure resistance. Examples include single-layer hoses, single-layer reinforced hoses, external fabric reinforced hoses, internal steel wire braided hoses, and external steel wire reinforced hoses (see the table for examples). The reinforced fabric hoses can be adjusted for pressure resistance quality through the material of the yarn (e.g., high-strength fibers like KEVLAR, polyester fibers), weave patterns, and warp and weft density, to meet customer requirements.
The same diameter hoses with different structural layers or materials will have different pressure resistance. Examples include single-layer hoses, single-layer reinforced hoses, external fabric reinforced hoses, internal steel wire braided hoses, and external steel wire reinforced hoses (see the table for examples). The reinforced fabric hoses can be adjusted for pressure resistance quality through the material of the yarn (e.g., high-strength fibers like KEVLAR, polyester fibers), weave patterns, and warp and weft density, to meet customer requirements.
Structure Layers | Burst Pressure (for inner diameter below 1”) |
Single-layer hose | 150-450PSI |
Single-layer reinforced hose | 2000~3000PSI or higher (special fabric weave, etc.) |
External fabric reinforced hose | 800~3000PSI |
External steel wire reinforced hose | 1500~3000PSI |