Which valve is designed to minimize wire drawing and seat erosion?

The globe valve is specifically designed to minimize wire drawing and seat erosion due to its unique construction and operational characteristics. Wire drawing occurs when the flow of fluid through a valve causes erosion of the seating surface, resulting from turbulence and high-velocity flow. Globe valves, with their spherical body shape and internal baffle, provide a controlled flow path that reduces the velocity of the fluid as it passes through.

Additionally, the design of a globe valve allows for a more gradual change in flow direction compared to other types of valves. This gradual change helps maintain a smoother flow and reduces the potential for turbulence and erosion at the valve seat. The seat area in a globe valve is generally larger and can offer better sealing capabilities, which also contributes to minimizing wear and prolonging the service life of the valve.

In contrast, ball valves and gate valves may experience more pronounced wear and tear at their seating surfaces due to a more abrupt change in flow direction or higher flow velocities that can lead to greater erosion. Pressure relief valves serve a different function altogether and focus on safety by venting excess pressure, rather than controlling flow dynamics in a way that would specifically minimize wire drawing or seat erosion.