What is the maximum pressure specification for attack hoses?

The specification of maximum pressure for attack hoses is primarily determined by the standards set by organizations such as the National Fire Protection Association (NFPA). Attack hoses are designed to withstand high pressures encountered during firefighting operations, which can occur when water is pumped at high flow rates to extinguish fires effectively.

A maximum pressure specification of 275 psi for attack hoses is consistent with industry standards, making it suitable for both the demands of firefighting and the safety of personnel using the equipment. This pressure rating allows for adequate performance in delivering water effectively while also ensuring that the hoses can handle the stress without failure.

The other specifications listed, such as 200 psi or 250 psi, do not provide the necessary pressure capacity required for modern firefighting tactics, which often involve high demands on fire streams and rapid water flow. The upper limit of 300 psi might be found in other applications or specialized hoses but does not represent the standard maximum for typical attack hoses, which need that balance between flexibility, durability, and high-pressure performance as indicated by the 275 psi specification.