| 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 arrangements (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. |
