Bleed valve and brake systems using same

A bleed valve, comprising:

• an elongate bleed valve bore having a first bore end in fluid communication with an ambient space and a second bore end, longitudinally spaced from the first bore end, with a bore lumen extending between the first and second bore ends;
• a supply side hydraulic line in fluid communication with the bore lumen adjacent the second bore end, the supply side hydraulic line being configured to selectively place the bore lumen in fluid communication with a source of pressurized hydraulic fluid;
• a fill side hydraulic line in fluid communication with the bore lumen at a location longitudinally interposed between the first bore end and the supply side hydraulic line, the fill side hydraulic line being configured to selectively place the bore lumen in fluid communication with a destination for pressurized hydraulic fluid from the source of pressurized hydraulic fluid along a bleed valve fluid path extending through a portion of the bore lumen;
• and
• an elongate bleed valve shuttle extending partially through the bore lumen for selective reciprocal motion between the first and second bore ends, the bleed valve shuttle having longitudinally spaced first and second shuttle ends selectively located longitudinally adjacent the respective first and second bore ends;
• wherein the bleed valve shuttle shifts longitudinally toward the first bore end into an operational configuration responsive to presence of a predetermined hydraulic pressure level within the bore lumen along the bleed valve fluid path, shifting of the bleed valve shuttle into the operational configuration being operative to urge air from the bore lumen into the ambient space.