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Working principle of Ball Valve

October 28, 2024
Under normal working conditions, the upper Ball Valve of the pilot valve is in a closed state, and the lower Ball Valve of the pilot valve is in an open state. The pipeline medium enters the air chamber above the Universal Valve through the lower Ball Valve, closing the Universal Valve. When the pipeline medium pressure is abnormal.
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When it reaches or exceeds the set set force, the lower Ball Valve of the pilot valve closes under the action of the medium pressure, cutting off the passage for the pipeline medium to enter the upper part of the Universal Valve. At the same time, the upper Ball Valve of the pilot valve is lifted by the push rod, that is, the pilot valve opens, and the medium in the air chamber above the Universal Valve is quickly discharged through the exhaust joint.
Under the strong action of the lower medium pressure, the Universal Valve opens instantly, and the pipeline medium is quickly and massively discharged from the outlet of the main valve, so that the pipeline medium pressure returns to the normal working pressure, ensuring the safety of the system.
When the pipeline pressure drops to about 90% of the set pressure set by the system, the upper Ball Valve of the pilot valve closes under the action of the spring, and the lower Ball Valve of the pilot valve is pushed open by the push rod, and the pipeline medium enters the air chamber above the Universal Valve through the lower Ball Valve. The Universal Valve closes under the action of the pressure difference, ensuring the normal operation of the system.
When the pipeline medium pressure is found to be abnormal and the pilot valve fails to open, the relief valve on the pilot valve can be manually opened to release the medium in the air chamber above the Universal Valve, so that the Universal Valve can be opened to release the abnormal medium pressure in the pipeline and ensure the safety of the system.
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