Type A48Y is suitable for temperature are less than 350 of steam, air and other media equipment and pipeline, as the overpressure protection device, when the equipment and pipeline internal pressure exceeds the allowable value, the valve automatically opens, then the whole amount of emissions; when the pressure is reduced to the specified value when the valve closes automatically, to ensure the safe operation of equipment and piping.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.
(1) JB/ t2203-1999 "structural length of spring safety valve" as the main general class. At present, most safety valve manufacturers in China are designed and produced according to this standard. However, this standard is not perfect, the specifications are not complete, the nominal diameter of micro opening safety valve is D NI 00, the nominal diameter of full opening safety valve is DN200, the middle missing DN65, DN125 two specifications. According to the safety valve specifications produced by our factory and the data we have, the nominal diameter of the micro opening safety valve is DN250, and the nominal diameter of the full opening safety valve is DN400. Through my research, the connection size of each manufacturer is not uniform, such as DN150 fully open safety valve, in order to have a unified standard, the user in the selection and installation of the same specification can be interchangeable, it is recommended that the general machinery institute of JB/ t2203-1999 "spring safety valve structure length" for revision. It is suggested that the design institute and users should choose safety valve according to the standard, and safety valve manufacturers should design and manufacture according to the standard.
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