The safety valve works

TheRange Dual Safety Valve is a safety device to prevent the occurrence of burst pressure equipment and container or can lead to increased pressure inside the pressure vessel or exceed the limits. Range Dual Safety Valves is pressure vessels, boilers, pressure pipelines pressure system uses a wide safety devices to ensure safe operation of the pressure system. When the vessel pressure exceeds the design requirements, the safety valve automatically opens, exhaust gases to reduce the high pressure inside, to prevent the vessel or pipeline damage. And when the pressure inside the container to normal operating pressure, which automatically shut down to avoid overpressure exhaust all of the gas container, causing waste and production interruptions. Safety valve consists of a valve seat, valve (spool) and load bodies of three parts. Some seat and the valve body as a whole, some with body assembled together, it communicates with the device. There are often associated valve stem, it closely on the seat. Valve above is the loading mechanism, load size can be adjusted. When working in a certain pressure range the pressure inside the device, the internal medium acting on the valve on top of the force is less than the loading mechanism applied to the valve on top of the force, constitutes the difference between the sealing force between the valve and valve seat, so that the valve seat is pressed against the media, the device can not be discharged. When the pressure inside the device exceeds a predetermined pressure of work and reach safety valve opening pressure, internal role of the media in trouble flap above loading mechanism force is greater than the force exerted on it, so the valve from the valve seat, the valve is turned on, the device within the medium that is discharged through the seat, if the safety valve displacement is greater than the safety discharge device, the pressure inside the device that is gradually decreased, but after a short time through exhaust, namely pressure drops back to normal operating pressure. Pressure within this time to force the valve flap above loading mechanism which is less than the force applied to it, and pressed the valve seat and the media to stop discharging, equipment to maintain normal operating pressure continues to run. For chemical, environmental protection, food and other industries.