pneumatic-hydraulic metal hard seal ball valve
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,
