An oscillator includes an oscillation circuit unit and an amplification circuit unit of the common-base type. The combination of natural physiological metabolites and herbal phytochemicals is used to treat connective tissue diseases, the composition preferably orally administered. A valve assembly is slidably mounted in the valve housing and slides under excess pressure to vent vapor from a vessel, such as a tank. Various components of the wastewater treatment system may be optimized to improve the efficiency and energy consumption of the wastewater system. As such, maintenance operations scheduled for the aircraft that will have the greatest state of readiness upon completion of the maintenance operations can be prioritized.