DFH20 / 7 mine electric ball valve (Figure) ore mine with electric ball valves parameters of the intrinsically safe solenoid valve Model DFH-20/7 with intrinsically safe electric ball valve plant dry afraid of fire! Danger, fire! Fire prevention, fire fighting is imperative! The Shanxi intrinsically safe electric ball valves Heilongjiang ball valve Mine intrinsically safe electric ball valve electric ball valves DFH-20/7 electric ball valves Shandong Coal Mine ball valve force most to! Security Equipment: Mine electric ball valve: with the ZP-127Z mine lower roadway dust, dust, and gas concentration with automatic water spray dust suppression device master box. Fire prevention, fire extinguishing flammable parts played role. Electric ball valves, DFH 20/7 mining intrinsically safe electric ball valves suitable for gas and coal dust explosive hazardous gases occasions, electric ball valves applies to coal mine gas and coal dust explosion hazards and poor water quality, a wide range of water pressure automated dust-proof, anti-extinguishing spray automatic control, for waterway automatic control switch. DFH-20/7 electric ball valve main technical parameters: explosion-proof in the form: mine of intrinsically safe ExibI work voltage: 12 to 24V DC (intrinsically safe) operating current: ≤ 100MA ball valve open Path: 20mm ball valve open / closing time: 3s ~ 10s (adjustable) water temperature adaptation range: 0 ℃ ~ 60 ℃ Water pressure: from 0.2Mpa to 7Mpa Note: the designed product pictures only supply reference to its physical prevail. Price supply electric ball valves mine electric ball valves supply: coal mines using infrared light control automatic spraying device ZP-127R infrared light control automatic spraying device mine automatically using infrared light control with infrared light control automatic spraying device ZPR coal mines spraying dust the device dust control water spray dust suppression device touch water spray dust suppression device touch the the dust controller dust concentration overrun watering dust stop control device ZPK open automatically the dust controller ore with touch automatic spraying device mine with touch automatic water spray dust suppression by optical control device mineral water spray dust suppression device for mining the of infrared pyroelectric automatic spraying device ZPW ore thermostat automatic watering dust Contact: Lv Yanhui phone: 15264744915 Tel 0537 -2359828 Want No: zhongmei20106 QQ: 1149597328 E-mail : Zhongmei616@163.com