Cam driven fluid valve assembly

A valve assembly comprising:

• an assembly housing having ports, each port configured to permit fluid communication between an environment of the assembly housing and an interior space of the assembly housing;
• valves disposed in the interior space, each valve including
• a valve seat having a valve seat through-opening, the valve seat being disposed in the assembly housing and fixed relative to the assembly housing so as to face a corresponding one of the ports, and
• a valve body that is movable relative to the valve seat, the valve body being disposed in the assembly housing and movable with the assembly housing between a first position in which fluid is permitted to flow through the valve seat through opening, and a second position in which fluid is prevented from flowing through the valve seat through opening;
• a cam shaft supported on the assembly housing, the cam shaft extending into the interior space, the cam shaft configured to rotate about a rotational axis relative to the assembly housing;
• and
• cams that are disposed in the interior space and supported on the cam shaft, each cam configured to rotate in concert with the cam shaft, each cam having an inner cam track that is disposed internally with respect to an outer surface of the cam and an outer cam track that is disposed on the outer surface of the cam,
• wherein
• each of the inner cam track and the outer cam track of a given cam at least partially encircles the rotational axis,
• the inner cam track of the given cam is configured to engage with the valve body of a first one of the valves, and
• the outer cam track of the given cam is configured to engage with the valve body of a second one of the valves,
• whereby the given cam is capable of moving both the valve body of the first one of the valves and the valve body of the second one of the valves upon rotation of the cam shaft.