Yes, when the liquid medium trapped in the valve chamber is vaporized due to the rise of temperature and the pressure in the middle chamber rises abnormally, the medium in the middle chamber pushes the valve seat backward by its own thrust to automatically relieve pressure, so as to ensure the safety of the valve body. For the double seal valve, in order to ensure the safety of the valve, the discharge valve body is added to discharge the accumulation in the middle chamber.
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