One Piece Ball Valve

The One Piece Ball valve, as the name suggests, is made out of one body piece unlike the 2 and 3 piece.  This means the valve cannot be taken apart for cleaning.  The advantage is that the valve will be low cost and robust.  As a result of the valve body, being one piece is that it uses a smaller ball.  This has to be used leading to a reduced port, more commonly called a reduced bore.