System for mixing concentrate and water to form fountain solution for offset printing presses

摘要

A system for mixing concentrate and water continuously and automatically including a water supply system and a concentrate system which systems feed into a common conduit to mix the concentrate and water to form a fountain solution. The water supply system has a water motor and is interconnected with valves for controlling the flow of water to and from the water motor. The concentrate system includes a concentrate pump and a concentrate supply valve for controlling the flow of concentrate to and from the concentrate pump. The water motor is interconnected with the concentrate pump to thereby drive the concentrate pump and the stroke of the concentrate pump is variable to permit variations in the concentrate and water mixture. The operation of the water system and the concentrate system is controlled by a pneumatic system which is activated by the water motor.