Flameproof electric valve with safety certificate coal mine explosion-proof electric motor gate valve protection class IP68, is one of the few companies have only coal mine safety certificate and proof certificate. Mine explosion-proof electric valve is suitable for explosive environments, high safety factor, operating functions, stable performance. Explosion-proof products dI and dIIBT4 two kinds, dI for coal mining face non; dIIBT4 used in factories, for environmental IIA, IIB grade explosive gas mixtures T1 ~ T4 group was. Mine explosion-proof electric valve's performance in line with the provisions of JB / T8528-1997 of. Explosion-proof performance in line with the provisions of GB3836.1-2000 and JB / T8529-1997 of. And explosion-proof electrical products by the National Testing Center test, made explosion-proof certification. Valve Features: ① valve using pressure from the tight seal or valve, valve cover gasket seal structure, trustworthy! Safety and reliability. ② valve using intermediate double plate with universal roof structure, can automatically adjust the valves and valve seat sealing surface of the goodness of fit, to ensure that the valve seal. At the same time this structure and easy maintenance, cost savings, better valve interchangeability. ③ valve seat sealing surface spray tungsten carbide with cobalt-chromium formed by plasma, high sealing surface hardness, wear resistance, abrasion resistance and long service life. ④ stem with nitriding steel, surface nitriding treatment, high hardness, resistance to abrasion, corrosion resistance and long service life. ⑤ electric unit is equipped with torque control mechanism, field operating agencies and hands, electric switching mechanism. In addition to local operation, but can also be used for remote operation, PLC control, 4 ~ 20mA current input and output of intelligent control. ⑥ manual valves open institution or hit by a manual hand wheel. Reducing the valve operating force. ⑦ valve can be installed anywhere in the pipeline, while the choice of carbon or alloy steel valves according to temperature of the medium and the medium. When ⑧ initial installation and commissioning, you must manually open the valve to about half of the position, so as not to cause the motor phase sequence is reversed or Denso valve damage. Mine explosion-proof electric valve is widely used in building materials, metallurgy, chemical, electrical and other sectors, as a compressed explosive pipeline pressure relief device. Especially for coal grinding systems and storage warehouse use flammable gaseous substances. Mine explosion-proof electric gate structure is simple, made of steel welded tube and explosion-proof valve slices. When the system pressure is greater than 0.1 Mpa gauge pressure, self-rupture-proof valve, explosion prevention system, to ensure personal safety and production. Flameproof electric valve with coal safety certificate flameproof electric valve