Fupower Custom Auto Parts Manufacturer - Best Racing parts manufactuer in China
Working pressure is the figure the hose is expected to survive in service. Burst pressure is the point at which it fails, and it is always the larger number. A burst figure quoted on its own is not very useful, because a hose can balloon or leak well before it bursts — and the pressure a hose holds falls as temperature rises, so a figure taken cold overstates what the hose will do in a hot engine bay.
That is why the specification should start with your actual conditions: boost level, the temperature of the medium, the diameter and the routing. Fupower tests hose for high-temperature and high-pressure performance rather than publishing a single headline number, and will recommend a construction against the conditions you describe.