Abstract: A valve system including a shuttle valve having first and second inlet channels connected respectively to first and second channels, a cavity, an outlet channel and a moveable element, the first and second inlet channels being in fluid communication with outlet channel via the cavity; wherein a moveable element is moveable within the cavity such that the position of the moveable element is determined by relative pressure levels in the first and second inlet channels, in a first position the movable element forming a seal between the moveable element and the first inlet channel, in a second position the moveable element forming a seal between the moveable element and the second inlet channel, and in a third position the moveable element being located between the first and second positions and allowing the passage of fluid from both the first and second channels.

Abstract: A valve system including a shuttle valve having first and second inlet channels connected respectively to first and second channels, a cavity, an outlet channel and a moveable element, the first and second inlet channels being in fluid communication with outlet channel via the cavity; wherein a moveable element is moveable within the cavity such that the position of the moveable element is determined by relative pressure levels in the first and second inlet channels, in a first position the movable element forming a seal between the moveable element and the first inlet channel, in a second position the moveable element forming a seal between the moveable element and the second inlet channel, and in a third position the moveable element being located between the first and second positions and allowing the passage of fluid from both the first and second channels.