‍Threeway ball valves feature long service life, large flow and low resistance.They are available in single-acting and double-acting types.Single-acting valves revert to the system's required position on power failure.Here is how they work‍

The working principle of a three-way ball valve：

A、

Closed: Ball is sealed against seat by stem pressure.

Turn handwheel counterclockwise: Stem lifts, ball separates from seat.

Stem continues rising and drives ball to rotate frictionlessly.

Fully open: Stem reaches top position and ball is fully open

B、

Turn handwheel clockwise to close; stem lowers and rotates the ball.

Stem and ball turn 90° via guide pin.

Ball rotates without contacting seat before closing.

Final turns wedge the ball tightly against seat for a perfect seal.

A three-way ball valve uses a rotating sphere to open and close.

It is mainly used to shut off, distribute and change medium flow direction.