What is the maximum working pressure for a fixture?

What is the maximum working pressure for a fixture?

• A. 550 kPa
• B. 550 kPa / 80 psi
• C. 80 psi
• D. 600 kPa

Answer: (B)

Maximum working pressure is the highest continuous pressure a fixture is designed to handle safely. This rating is commonly given in both kilopascals (kPa) and pounds per square inch (psi) so it’s usable in metric or imperial systems. The conversion between units is about 1 psi ≈ 6.895 kPa, so 80 psi is roughly 551 kPa. Because of rounding, 550 kPa and 80 psi represent the same limit. The best answer expresses both values, showing the same rating in both units, which removes ambiguity and ensures you’re matching the fixture to the system pressure. A value like 600 kPa would exceed the rated capacity, and listing only one unit could lead to misinterpretation if the system uses the other unit.

Maximum working pressure is the highest continuous pressure a fixture is designed to handle safely. This rating is commonly given in both kilopascals (kPa) and pounds per square inch (psi) so it’s usable in metric or imperial systems. The conversion between units is about 1 psi ≈ 6.895 kPa, so 80 psi is roughly 551 kPa. Because of rounding, 550 kPa and 80 psi represent the same limit. The best answer expresses both values, showing the same rating in both units, which removes ambiguity and ensures you’re matching the fixture to the system pressure. A value like 600 kPa would exceed the rated capacity, and listing only one unit could lead to misinterpretation if the system uses the other unit.