| 摘要 |
A system for treating a quantity of fluid from an associated fluid source which includes a variable volume device having an interior space, fluid communication apparatus connecting the interior space of the variable volume device to the associated fluid source, a treatment assembly communicating with an outlet of the variable volume device and apparatus biasing the variable volume device to have a smaller volume whereby the fluid is urged out of the variable volume device into the treatment assembly. In some cases the treatment assembly is a filter assembly which may include a coalescing filter. The apparatus biasing the variable volume device to have a smaller volume may be a weight on a part of the variable volume device. The system may further include apparatus biasing the variable volume device to slow the rate of increase in volume as the variable volume device approaches maximum volume. Some forms of the filter assembly may include a container and the level of oil in the container may be visible through the walls of the container.
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