What is the term for subjecting a pump to operating pressures greater than those for which it was designed?

What is the term for subjecting a pump to operating pressures greater than those for which it was designed?

• A. Over-pressurization
• B. Improper fluid
• C. Single-acting cylinder
• D. Double-acting cylinder

Answer: (A)

Exceeding the pump’s maximum operating pressure is called over-pressurization. When pressure rises beyond what the pump is designed to withstand, critical parts like seals, bearings, and the impeller face excessive stress, leading to leaks, seal failure, accelerated wear, or even catastrophic rupture. This also causes extra heat and can degrade the fluid as pressures push it beyond its usable range. To prevent this, hydraulic systems use relief valves or pressure regulators to keep pressure within the pump’s rated limit. The other terms refer to different concepts—using the wrong fluid, or a cylinder’s actuation type (single-acting vs. double-acting)—and don’t describe the condition of the pump being pushed past its design pressure.