At what pressure should attack hoses be tested?

The recommended pressure for testing attack hoses is standardized to ensure that they can withstand the stress and conditions they will encounter during firefighting operations. Testing at 300 psi is a common industry standard. This pressure is safely above the normal working pressures that an attack hose would experience during use, allowing for a thorough evaluation of the hose's integrity, fittings, and couplings.

Testing at this pressure helps to identify any weaknesses or defects in the hose that could lead to failures in high-stress situations, ensuring both firefighter safety and effective operational readiness. While other pressures may be relevant for different types of hoses or applications, 300 psi is specifically designated for attack hoses in many firefighting guidelines, which is why it is the correct choice for this question.