Safety valve is in normal closed state. Only when the set pressure in the equipment exceeds the allowable value, the valve disc opens automatically. When the disc is discharged to the set value of the equipment, the disc will automatically do back to carry out secondary protection. Although the safety valve is a safety valve to protect equipment and people, the number of times the safety valve will not be too many. Because every time the device is turned on, there is a problem with it.
Safety valve manufacturing is very complicated
Specific steps of Wu Da to complete the production of safety valve
The first choice of material is to select the appropriate material according to the suitable temperature and medium. The common materials of safety valve at room temperature are carbon steel and cast steel. When the medium is corrosive, usually choose stainless steel (stainless steel roughly divided into 304, 316, 316L) when the temperature is higher: chromium-molybdenum steel, or chromium-molybdenum van steel. When the corrosivity of medium is very high, it can be lined with tetrafluoro material.
The second valve body, according to the type of choice of specified abrasives to make a prescribed body shape.
The third sealing surface, valve sealing surface is a very delicate step, from our factory master by hand a little bit of grinding, but pure manual grinding.
Fourth pressure test, the valve has been completed now need a very important process, that is, pressure test on the pipeline, the valve placed in a dedicated pressure test pipeline, by our factory professional pressure test technicians according to customer requirements of the pressure set, pressure set after success. The last step is needed to make the valve successfully.
Fifth, put the valve on the special spray equipment for final treatment. This step is mainly for the beauty of the valve body, and must wait for the paint to dry out before packing and shipping.
