초록 ▼

An above-ground storage system, especially for use with hazardous materials is disclosed. The system includes a first inner tank and a second outer tank. An air-operated diaphragm pump is used to fill the tank. In order to preent overfilling of the tank and, therefore environmental contamination, a

An above-ground storage system, especially for use with hazardous materials is disclosed. The system includes a first inner tank and a second outer tank. An air-operated diaphragm pump is used to fill the tank. In order to preent overfilling of the tank and, therefore environmental contamination, a valve is installed in the air supply line to the air pump. The valve is operated by a float within the tank. When the float becomes submerged in liquid the valve is closed by an arm connected to the float.

대표청구항 ▼

An above-ground waste oil storage system comprising: (a) an outer tank, said outer tank having an open top; (b) a substantially closed inner tank, said inner tank placed within said outer tank, said inner tank further comprising a tank oil inlet port, a tank oil discharge port, a vent port, and a le

An above-ground waste oil storage system comprising: (a) an outer tank, said outer tank having an open top; (b) a substantially closed inner tank, said inner tank placed within said outer tank, said inner tank further comprising a tank oil inlet port, a tank oil discharge port, a vent port, and a level detection port, all of said ports in a top surface of said inner tank, said inner tank and said outer tank forming an annulus between said inner and said outer tanks; (c) an air-operated diaphragm pump having a system oil inlet, a pump oil outlet, and a pump air inlet, said oil outlet connected to said tank oil inlet port; (d) a disposal pipe extending upwards from said tank oil discharge port and downwards into said inner tank; (e) a float valve assembly, said float valve assembly comprising: (i) a float in said inner tank, said float having an arm extending through said level detection port; and (ii) an air shut-off valve in said pump air inlet, said air shut-off valve positioned in an open position by said arm when said float is not immersed in oil, said valve in a closed position when said float is immersed in oil; and (f) a substantially frustroconical cover over said annulus.