The Oil Stop Valve protects waterways from oil or petroleum spills. The passive spill stop valve detects accumulations of oil and activates a valve that positively stops the flow of stormwater and oil upstream from the valve.
The Oil Stop Valve operates on the principles of buoyancy. A ballasted float, which is the only moving part, is weighted for a specified gravity, typically between 0.9 and 0.95. In water, the float will float and keep the valve open. An accumulation of oil around the float will decrease the buoyant force on the float causing it to float lower in the liquid. As the oil accumulation increases, the float will sink lower and finally close the valve when the oil level is approximately 3 to 4 inches thick.
The Oil Stop Valve housing is fabricated from non-corrosive PVC (low risk of fire) or stainless steel (high risk of fire) to provide greater design flexibility and pricing options. It is typically installed below ground and in-line with the piping system and can also be installed in pre-assembled concrete manhole or vault designs.
The Oil Stop Valve is used in applications where oil spills are possible but unpredictable, including:
Oil Stop Valve Brochure
Oil Stop Valve Design/Operation/Maintenance
Airport Solutions Brochure
Stormwater Treatment Product Design Worksheet
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