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A bellows-type Pressure Safety Valve (PSV) is a critical safety device used in various industrial processes to protect equipment from overpressure conditions. This type of PSV is designed with a flexible metallic bellows, which isolates the valve's internals, including the spring, from the process fluid. The bellows ensure that the process fluid does not come into contact with the spring, which could otherwise cause corrosion or damage, particularly in systems handling corrosive or hazardous flu
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