What is the maximum hose pressure for 5 inch supply hoses?

What is the maximum hose pressure for 5 inch supply hoses?

• A. 200 psi
• B. 450 psi
• C. 360 psi
• D. 540 psi

Answer: (A)

Large-diameter supply hoses are built to move a lot of water, but for safety and longevity they’re rated for a moderate maximum working pressure. For a 5-inch supply hose, the safe operating limit is about 200 psi. Staying at or below this pressure protects the hose from overstress and reduces wear during long relay runs from hydrants to the pump or to the next relay point. Pressures well above this—such as 360, 450, or 540 psi—exceed the hose’s design and increase the risk of failure; higher numbers are typically only used for hydrostatic testing, not normal service.

Large-diameter supply hoses are built to move a lot of water, but for safety and longevity they’re rated for a moderate maximum working pressure. For a 5-inch supply hose, the safe operating limit is about 200 psi. Staying at or below this pressure protects the hose from overstress and reduces wear during long relay runs from hydrants to the pump or to the next relay point. Pressures well above this—such as 360, 450, or 540 psi—exceed the hose’s design and increase the risk of failure; higher numbers are typically only used for hydrostatic testing, not normal service.