A pop safety valve is commonly categorized as a...

• A. Pneumatic valve
• B. Spring loaded valve
• C. Electric valve
• D. Manual valve

Answer: (B)

A pop safety valve is identified as a spring-loaded valve because it utilizes a spring mechanism to maintain a sealed position until the pressure within the system exceeds a predetermined limit. When the pressure exceeds this limit, the force of the spring is overcome, allowing the valve to open and release excess pressure, thus preventing potential system failure or explosions.

This design is critical for safety in various applications, including boilers and pressure vessels, where managing pressure is essential. The spring component is key to the automatic operation of the valve, as it allows for rapid response to pressure changes without the need for external power sources or manual intervention. Therefore, categorizing a pop safety valve as a spring-loaded valve reflects its operational principle and design characteristics.