Strukturell Feature vum DBB Trunnion Kugelventil
Duebelschnëtt a Relief Design vum DBB Trunnion Kugelventil
(1). Double blocking and venting function
The trunnion ball valve generally adopts the ball front seat sealing structure. The two valve seats
of the trunnion ball valve can independently cut off the medium at the inlet end to realize the
double-break function. When the ball valve is closed, even if the inlet and outlet ends of the valve
are pressurized at the same time, the valve The middle cavity and the channels at both ends can
also be blocked from each other, and the remaining medium in the middle cavity can be
discharged through the relief valve.
(2). Automatic pressure relief of the valve cavity
When the liquid medium in the middle cavity of the valve vaporizes due to the increase in
temperature, causing the pressure in the middle cavity to increase abnormally, the medium in the
middle cavity can rely on its own force to push the valve seat and automatically release the
pressure, thereby ensuring the safety of the valve .