New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

Which of the following is NOT a type of valve port?

1. Increase port

2. Full port

3. Reduced

4. Venturi

The correct answer is: Increase port

The identification of valve ports is essential in pipe fitting and understanding fluid dynamics. Among the options provided, a full port valve refers to a valve design that allows the same internal diameter as the pipe it's connected to, ensuring minimal flow resistance and turbulence. A reduced port valve features a smaller diameter opening, leading to restricted flow, which might be suitable for specific applications where lower flow rates are needed. The Venturi effect is a principle observed in fluid dynamics that describes how a fluid's velocity increases as it passes through a constricted section of pipe, thus this term refers more to a phenomenon than a valve port design. Therefore, the term “increase port” does not align with established classifications of valve ports, making it the option that does not belong in the context of valve design. Thus, it is understood that this particular term is not recognized within standard valve types, while the others have clear definitions and applications in piping systems.