The RISING STEM ball valve performance is based on slope and rotation mechanism of the stem and ball. This allows to eliminate the rubbing of the ball against the seal, avoiding any damage.

When the valve is closed, the ball is in contact with the seat, ensuring a tight seal.
When the valve starts opening, the ball tilts, moving away from the seat, and the line flow passes uniformly. Then, the ball rotates to the fully open position. The absence of ball scraping against the seat, during both the opening and the closing, allows to have low torques (with the consequent reduction of the actuators dimensions), high flows and optimal long-term performance.

This type of valve is suitable for high temperatures, abrasive liquids (with possible solid bodies), applications requiring zero leakage and frequent maintenance operations.

The design of this kind of valves is TOP ENTRY, allowing the inspection and repair of the valve, simplifying the maintenance