The mining explosion-proof electric gate valve MKZ941H is a valve designed specifically for flammable and explosive environments such as coal mines. Its detailed parameters are as follows: nominal pressure range: PN1.6~32.0MPa, suitable for high-pressure conditions. Applicable temperature range: -29 ℃~550 ℃, depending on the valve body material (such as carbon steel WCB425 ℃, chromium molybdenum steel 550 ℃). Valve body material: Common materials include WCB cast steel, 304/304L stainless steel, 316/316L stainless steel, etc., to meet different media and corrosion resistance requirements. ‌

Power supply voltage: Typically AC 380V or AC 660V (three-phase), but special voltages such as 127V, 220V, 415V can also be customized; The control voltage is usually DC 24V or AC 24V. ‌

Working environment: Suitable for explosive gas environments in coal mines or factories, with explosion-proof rating of dI or dIIBT4, protection level of IP55 or IP68, ambient temperature of -20~+40 ℃, altitude not exceeding 2000 meters. ‌

Control mode: Supports multiple modes, including switch type (accepting switch signals), regulating type (accepting 4-20mA analog signals), RS-485 bus type, etc. Some models can achieve intelligent integrated operation. ‌

Medium adaptability: Suitable for corrosive or flammable media such as water, oil, steam, acid and alkali, and sulfur-containing natural gas. ‌

Installation and operation: The length of the valve stem sheath should match the bolt grade, and it is recommended to install the motor horizontally; When the power is cut off, it can be manually operated, and the opening and closing torque is optimized through rolling bearings. ‌

This valve needs to have a Coal Safety Certificate (MA certification) before it can be used in the coal mining industry to ensure safety and compliance. ‌