fixed pipeline ball valve is designed with the world advanced finite element analysis software, thus strongly ensuring its body strength and the reliability of normal action of its internal components. According to specific working conditions, the ball can be supported with a bonnet or a supporting plate. In particular, its big stem design ensures its safe operation and long service life. Pressure class: CLASS150～1500 Diameter range: 2～40

QYIII series metal seal ball valve adopts a fixed ball structure, which conforms to relevant standards strictly regarding its design, material selection, manufacturing test, surface treatment and painting. There are multiple options for materials of its internal components, subject to application in working conditions. It is optional for full or reduced bore and also for many kinds of actuators, which is an ideal valve option for chemical engineering, petroleum refining,