High pressure paint pump

Claim 1

In a pump system, particularly for the pressurization of liquid paint sufficient for hydraulic atomization when said paint is released through the nozzle of a spray gun, having a high pressure pump with an inlet communicating with a source of liquid paint and an outlet, motor means for driving said pump, a pressure controller having a sensing element for sensing and controlling the pressure of the liquid paint delivered by said pump, a filter for filtering the liquid paint delivered by said pump, and a by-pass valve for priming said system on start-up, the improvement comprising: a substantially cube shaped multiplex unit detachably secured to said pump at the pressure outlet thereof, said multiplex unit having a first well-like opening in a first face thereof for accepting the pressure sensor of said pressure controller, a second well-like opening in a second face normal to said first face for said filter, and an outlet port in a third face communicating with a spray gun; and a continuous fluid passageway in said multiplex unit commencing at the pressure outlet of the pump and terminating at the outlet port of the multiplex unit, said continuous passageway comprising, a first fluid bore connecting the pressure outlet of the pump to said first well-like opening, said second well-like opening peripherally intersecting said first well-like opening at a right angle thereto such that the center line of said second well-like opening does not intersect said first well-like opening, and a second fluid bore coaxial with said second well-like opening and communicating with said outlet port.