b'GENERAL INFORMATION ParkUSAs Oil Stop Valve (OSV) is a device whose design is based ParkUSAs Oil Stop Valve (OSV) is a device whose design is based on gravityon gravity differential separation differential separation forces. It is a product used to stop the flow passing throughforces. It is a product used to a separator tank when the oil levels go over the permitted limit. The OSV functionsstop the flow passing through a by the buoyancy theory, a moving plastic sphere with specific gravity of 0.9 is usedseparator tank when the oil levels as a tool to stop the flow at the outlet. In water, the sphere will float and the flow go over the permitted limit.is maintained continuous. However, when there is accumulation of oil aroundthe sphere, the buoyant force will decrease and the sphere will tend to sink,this causes the obstruction of the outlet and the flow is stopped. Normally, theFEATURESvalve is closed when the oil level is at about 4 inches above the bottom of the float. Automatic gravity operation deviceMODELS Easy installation and maintenance High flow rate models availableMaterial of construction is resistant to corrosion and tough environmentsVersatility to operate together with alarm and sensor systemsFlexible design to work with different oil typesStandard Model High Flow ModelCurrent Oil Stop Valve models includes:Standard Model: Unit used in most types of separators, it treats low to medium flow rates (up to 400 GPM)High Flow Model: Unit used for special engineered products, it treats high level flow ratesSYSTEM COMPONENTSThe ParkUSA OSV possesses the following components: Float, with design specific gravity of 0.9 Float compartment, that contain the float and where the gravity-mechanical process takes place Piping, where the flow is directed Release cable, that holds the float so it can be manually released when neededOPERATIONThe function of the OSV is to stop the flow at the moment oil levels go high. For an optimal operation, the float needs to be completely submerged, to maintain the operable capacity of the device. The valve is designed for easy operation, and it is mostly used in oil/water gravity differential separators and media type separators.DESIGN CONSIDERATIONSThe valve is designed to properly function at required flows. Devices working at unassigned flow rates will cause the flow obstruction by the float, under-design is never recommended on these devices. At the same time, the outlet center line is required to be below the water level at a distance equal or greater than the expected head loss.342'