Ball valves and methods of manufacture

A ball valve, comprising:

• a housing;
• and
• a ball positioned within the housing and configured to rotate to adjust the ball valve between an open position and a closed position, wherein the ball comprises an outer wall, an inner wall that defines a central bore that enables fluid flow across the ball valve while the ball valve is in the open position, and a first lattice structure that extends between the outer wall and the inner wall;
• wherein the first lattice structure comprises a grid of cells interconnected with one another and coupled to the inner and outer walls, and the grid of cells comprises a plurality of cells disposed one after another in a first direction from the outer wall to the inner wall.

A system, comprising:

• a valve configured to mount in a valve body having a fluid passage, wherein the valve is configured to move between an open position and closed position in the valve body, wherein the valve comprises:
• an outer wall;
• an inner wall that defines a central bore;
• and
• a lattice structure positioned within an interior space defined between the outer wall and the inner wall, wherein the lattice structure comprises a grid of cells interconnected with one another and coupled to the inner and outer walls, and the grid of cells comprises a plurality of cells disposed one after another in a first direction from the outer wall to the inner wall.