A filter assembly is disclosed having a filter base including an inlet and an outlet. The filter assembly also has a first valve disposed in the inlet, the first valve including a portion that protrudes from the filter base. The filter assembly additionally has a second valve disposed in the outlet, the second valve including a portion that protrudes from the filter base. The filter assembly also has a removably attachable filter configured to mechanically bias the first and second valves in an open position.