Hose shall be tested at what pressure relative to maximum container pressure and at what temperature?

• A. 2 times the maximum container pressure at 70°F
• B. 1 1/2 times the maximum container pressure at 130°F
• C. Equal to the maximum container pressure at 100°F
• D. 3 times the maximum container pressure at 50°F

Answer: (D)

Testing hose assemblies at three times the maximum container pressure at 50°F provides a robust safety margin to catch weak points and account for pressure surges and material behavior in cold conditions. The 50°F reference temperature represents a conservative, cooler ambient condition where hose material can be stiffer and more vulnerable, so proving the hose can handle triple the MCP at that temperature gives confidence across real-world operating ranges. Options using lower multipliers, or different temperatures, don’t offer the same level of assurance, and testing at only the MCP wouldn’t expose potential failures under peak loads. Therefore, the correct test condition is three times the maximum container pressure at 50°F.