Product

Coal Safety Certificate Electric Butterfly Valve

Brand：Pneumatic eccentric butterfly valve 型号：MAD941X-10

The following is a comprehensive summary of the technical parameters, application scenarios, and market data of the coal safety certificate electric butterfly valve:

1、 Product Definition and Core Features
The coal safety certificate electric butterfly valve is an explosion-proof valve designed specifically for underground coal mines. It needs to pass the national coal mine safety mark certification (MA certification), and its core features include:
Explosion proof design: Adopting explosion-proof electric actuators (ExdI) with explosion-proof grade BT4, suitable for high gas and coal dust explosion hazardous environments.
Sealing structure: Triple eccentric metal hard seal or soft seal (EPDM/NBR), leakage rate ≤ 0.5%.
Control mode: Supports AC220V/380V power supply and can be connected to DCS system for remote control.
2、 Comparison of Technical Parameters
Parameters: Conventional mining electric butterfly valve, gas specific electric butterfly valve
Applicable media: water/gas, gas/highly corrosive gas
Explosion proof grade ExdI BT4 ExdI BT4+anti-static
Diameter range DN50~DN2000 DN50~DN1200
Working temperature -20 ℃~80 ℃ -20 ℃~300 ℃ (metal seal)
3、 Typical application scenarios
Coal mine gas drainage system
Gas extraction pipelines used in high gas mines require anti-static and anti-corrosion design.
Gas power plant
To control the gas flow rate, it needs to be used in conjunction with a flameproof electric device control box.
Underground automatic spray system
Dust and fire prevention control with poor water quality and wide water pressure range
。