What is the purpose of a relief valve in a pump system?

• A. To increase water flow from the pump
• B. To prevent excessive pressure build-up
• C. To enable automated pump operation
• D. To filter debris from the water supply

Answer: (B)

The purpose of a relief valve in a pump system is to prevent excessive pressure build-up. This is crucial for maintaining the safety and integrity of the entire system. When water is pumped, the pressure can rise significantly, especially if there are blockages or closed valves downstream. The relief valve acts as a safety device, allowing excess pressure to escape, typically by opening at a predetermined pressure level. This prevents potential damage to the pump and other components, such as pipes or fittings, which could fail under high pressure. In essence, it protects the equipment from overpressurization, ensuring a safe and efficient operating environment for the pump system.