Abstract: A multiport rotary valve apparatus for directing fluid streams which has two circular stationary heads and two circular rotating heads. The first stationary head has at least two and preferably more primary ports for connection with fluid streams and a corresponding number of secondary ports for connection to fluid-solid contacting chambers. The second stationary head has the same number of primary ports as the first stationary head (at least two and preferably more) for connection with the fluid streams and the same number of secondary ports for a second connection to the fluid-solid contacting chambers. Each stationary head includes internal conduits for the connection of the primary and secondary ports to a rotating head.

Abstract: A multiport rotary valve apparatus for directing fluid streams which has two circular stationary heads and two circular rotating heads. The first stationary head has at least two and preferably more primary ports for connection with fluid streams and a corresponding number of secondary ports for connection to fluid-solid contacting chambers. The second stationary head has the same number of primary ports as the first stationary head (at least two and preferably more) for connection with the fluid streams and the same number of secondary ports for a second connection to the fluid-solid contacting chambers. Each stationary head includes internal conduits for the connection of the primary and secondary ports to a rotating head. The first rotating head is in communication with the first stationary head while the second rotating head is in communication with the second stationary head.