Rapid-inflate valve stems and associated systems and methods

A rapid-inflate valve assembly, comprising:

• an annular body configured to couple to a valve stem port and selectively permit gas flow through the valve stem port, the annular body having:
• a central passage extending from an inlet end concentrically through at least a portion of the annular body;
• a sealing surface extending radially outward from an end of the central passage opposite the inlet end;
• and
• a chamber fluidly coupled to the central passage and extending from the sealing surface away from the inlet end, the chamber having an orifice extending through the annular body, the orifice configured to permit gas flow through the valve stem port;
• a sealing member slidable within chamber;
• and
• a biasing member urging the sealing member toward the sealing surface, wherein:
• when in a closed position, the sealing member is positioned in contact with the sealing surface to prohibit gas flow between the central passage and the orifice, and
• when in an open position, the sealing member is positioned away from the sealing surface to permit gas flow between the central passage and the orifice.