Which valve type requires specific and routine lubrication?

The tapered plug valve requires specific and routine lubrication due to its design and function. This type of valve consists of a conical (tapered) plug that fits into a corresponding tapered seat. The tight fit can lead to friction when the valve is operated, which necessitates regular lubrication to ensure smooth operation, prevent wear, and maintain a proper seal.

Lubrication helps reduce the risk of seizing and extends the lifespan of the valve by minimizing the physical wear that occurs during operation. Regular maintenance checks for lubricating components help avoid operational failures and ensure the valve performs effectively under various working conditions.

In contrast, while other valve types like butterfly, globe, and check valves have their maintenance needs, they do not typically require the same routine lubrication as tapered plug valves do. Their design and functionality allow them to operate effectively without specific lubricant needs, focusing instead on other maintenance protocols.