Pistol grip hose nozzle with proportional flow control

A flow valve assembly for regulating water flow between two water conduits having a valve seat fluidly connecting the two water conduits, the flow valve assembly comprising:

• a rotatable flow cylinder having an enclosed top surface, an open bottom, and a side surface with a non-circular opening, the flow cylinder being shaped to fit within the valve seat to block water flow between the two water conduits;
• a valve stem coupled to the enclosed top surface;
• wherein the flow cylinder is rotated to allow water flow between the two water conduits, the water flowing through the non-circular opening in linear proportion to the angle of rotation of the flow cylinder and out the open bottom of the flow cylinder;
• and
• a spring placed around the valve stern within the rotatable flow cylinder to bias the rotatable flow cylinder in a selected position.

A valve assembly for use with a fixed body structure defining an interior water passage including an inlet passage portion and an outlet passage portion, the valve assembly comprising:

• a valve seat mountable between the outlet passage and the inlet passage portions;
• an exterior cylinder having an aperture attached to the valve seat such that the aperture is in fluid communication with the inlet passage;
• a rotatable cylinder having an open bottom end in fluid communication with the outlet passage and an inlet aperture, the rotatable cylinder in cooperating relation with said exterior cylinder for rotating movement between opened and closed positions to control the flow of water communicated between said inlet passage portion to said outlet passage portion from zero flow when said rotatable cylinder is in a closed position to full flow when said rotatable cylinder is in an opened position aligning the inlet aperture with the aperture and varying flow rates therebetween when said rotatable cylinder is in varying positions between said closed and opened positions;
• wherein the flow rate is proportional to the position of said valve between said open and closed position;
• and
• a valve stem, extending through the open bottom end of the rotatable cylinder, having one end rotatably mounted in the valve seat and a second end attached to the closed end of the rotatable cylinder.