Electric explosion-proof valve: 
 1, structural features, uses and precautions 
 "Dry QY instrument" series can be installed anywhere in the pipeline, the media stream from the bottom up. Product design and manufacture according to the national standard GB12235, reasonable structure, reliable sealing, excellent performance, attractive appearance. Alloy steel valve for high-temperature steam, oil pipelines, high temperature characteristics. Stainless steel valve for all types of pipeline corrosion medium, good corrosion resistance of sufficient strength. Its characteristics are as follows: 
 ① valve, valve seat sealing surface together with the hard surfacing made of wear-resistant, high temperature, corrosion resistance, abrasion resistance and long service life. 
 ② material for nitriding steel stem, the stem after nitriding surface hardness, wear, abrasion resistance, corrosion resistance. 
 ③ As the temperature, pressure and other reasons, the valve diameter DN50 valve below the valve cover to die forgings, DN65 above the valve body, valve cover is cast steel. 
 ④ full range of body materials, packing, gaskets according to actual conditions or user requirements reasonable matching can be applied with a variety of pressure, temperature and medium conditions. 
 ⑤ When installing the valve the flow of media attention, in strict accordance with the flow arrow in the direction of the valve installation. 
 ⑥ as electric valve mounted vertically, stem up.