Patent ID: 7278435
Filing Date: 2007-10-09
Classification: B60S,C02F,E03F

Abstract:
1. In a open-air, outdoor wash station for large objects, such as is used for periodic maintenance of transportation vehicles and washing of large animals, having a source of clean wash water for washing said large objects, means for collecting said wash water on a deck, means for channeling said wash from said deck into a drain, and a waste stream control valve for restricting the discharge of fluid from said drain into a waste water treatment facility, wherein the improvement comprises: A. A pressure reduction valve, associated with a feed steam of clean wash water, wherein said pressure reduction valve is hydraulically coupled to a waste stream control valve, by means of a hydraulic, waste stream actuator line, so as to provide a source of hydraulic pressure for actuation of waste stream control valve, upon flow of wash water through said pressure reduction valve; B. A waste stream control valve normally biased in a closed position; and C. A waste stream control valve actuation means, associated with said waste stream control valve, and hydraulically coupled to said pressure reduction valve by said waste stream actuator line, whereby an increase in hydraulic pressure, resulting from the flow of wash water through said pressure reduction valve, causes an increase in hydraulic pressure within said actuator line, and said actuator means to open said waste stream control valve, and a reduction of hydraulic pressure, within said actuator line, allows said waste stream control valve to return to a closed position.