Explosion-proof solenoid valve is a device might ignite the explosive gas mixture components all enclosed in a shell, the shell can withstand any joints or structural gap housing, penetrated into the interior of the housing flammable mixture in an internal explosion without damage, and without lit from one external cause, a variety of gases or vapors to form explosive environment, the possible sparks, arcs and dangerous temperature of the components are placed in a flameproof enclosure, flameproof enclosure so that the inner space of the device and the surroundings apart. Flameproof enclosure there is a gap, due to respiration and electrical equipment gas permeation, so there may be an internal explosive gas mixtures.