Oswal’s Trunnion Mounted Ball Valve is the
result of Innovative engineering. It embodies
all the quality, Performance, value and safety
features required for critical applications.
In Trunnion Mounted Ball Valve,
the ball rotates without moving on the horizontal
axis, where as seats are floating and free to
move on the same axis. As the pressure increases
the force on the seat ring by the pressure pushes
towards the ball giving ‘BIDIRECTIONAL’
sealing.
Thrust due to (Fluid Pressure
+ spring) both on the upstream and downstream,
pushes seat ring towards the ball for positive
sealing under all conditions.
When the valve is in closed position,
the fluid trapped in the body cavity is subjected
to thermal expansion and the valve cavity pressure
increases. The excessive pressure buildup within
the valve cavity is relieved automatically when
the pressure inside exceed the spring load on
the seat.
Internal Trunnion reduces the
chance of fluid leakage to the atmosphere as in
the case of external Trunnion Mounted ball Valves.
