A floating ball design offers efficient sealing with simple construction. As the name indicates, the ball has some freedom to move along the axis of the pipeline, which offers efficient downstream sealing. When line pressure is applied to the closed ball, it moves slightly (or floats) downstream to maintain contact with the downstream seat where primary sealing occurs. A quarter turn motion from full open to full close ensures quick open-close action, an inherent advantage for automatic remote control application. Floating ball valve offers effective bi-directional sealing.
Trunion mounted design offers precise locational accuracy for the ball within the upstream and downstream seat, which ensures leak tight sealing with lower operative torques. The sealing takes place by allowing the seats to move towards the ball. This design ball valves can hold very high pressures.
|General Design & Manufacturing||Valve Dimensions||Valve Inspection & Testing||Special Features|
|BS EN ISO 17292||ASME B16.10/ ASME B16.5||BS EN 12266-1
Hydro Shell : 228 kg/sq.cm
Seat Test : 153 kg/sq.cm
Air Seat : 7 kg/sq.cm
|Fire Safe to API-607, Metal to Metal Seat|
|Valve type||=>||Floating / Trunion Mounted design ball valve|
|Body type||=>||2 pc|
|Seat type||=>||Soft / Metal|
|End Connection||=>||Flanged, Butt Weld|
|Size range||=>||15 NB to 200 NB for reduced port/full port|
|Pressure rating||=>||Class 900|
|Seat leakage||=>||Class VI – Soft seat, Class IV – Metal seat|
|Operation||=>||Hand Leaver/Gear / Actuator (Electrical / Pneumatic)|