Patent ID: 7232420

Claim:
A flow rate selection valve, comprising: a gate cylinder having a gate cylinder rotational axis and having at least two flow rate determining passageways and passing laterally through said gate cylinder at orientations angularly displaced from each other and having gate cylinder rotation means for receipt of torque about said gate cylinder rotational axis; and a valve housing containing a flow passageway and having a cylinder receiving bore intersecting said flow passageway into which said gate cylinder is rotatably and sealingly mounted, said gate cylinder dividing said flow passageway into a flow passageway inlet end and a flow passageway outlet end, said flow passageway containing a passageway registration barrier extending across said flow passageway and sealingly abutting said gate cylinder and having a plurality of flow ports with different minimum diameters, each said flow port being positioned to correspond to and register with one of said flow rate determining passageways and said flow ports being in simultaneous fluid communication with one of: said flow passageway inlet end and said flow passageway outlet end; such that rotating said gate cylinder with said gate cylinder rotation means causes said flow rate determining passageways to register sequentially and individually with corresponding said flow ports, and thereby places said flow passageway outlet end sequentially in fluid communication with said flow passageway inlet end.