| 摘要 |
A proportioning system 20 includes first and second cylinder and piston arrangements 26, 28 with an actuator 30 operably engaging the first and second cylinder and piston arrangement 26, 28. By changing the diameter and/or stroke of the pistons 54, 56, the mix ratio of two dispensed fluids changes. By changing the pivot point 32 of the actuator 30, the stroke length can be changed. The proportioning system 20 also includes a safety mechanism which prevents a concentrated fluid from being dispensed should the reservoir of diluting fluid be depleted. |
