Flue gas butterfly valve

The following is a comprehensive technical analysis and market data on high-temperature flue gas butterfly valves and high-temperature resistant flue gas butterfly valves:

1、 Product Definition and Core Features
The high-temperature flue gas butterfly valve is designed specifically for flue gas systems to control the flow of high-temperature dusty gases (such as smoke and gas). Its core characteristics include:
High temperature resistance: The valve body is made of 310S stainless steel or hard alloy overlay, with a working temperature range of -40 ℃ to 1200 ℃.
Sealing technology: Hard sealing structure (such as Stellite alloy) or ceramic fiber lining, with a leakage rate of ≤ 0.5%.
Drive mode: Supports manual, pneumatic, and electric (including explosion-proof type), compatible with DCS system remote control.
2、 Comparison of Technical Parameters
Parameters: Conventional High Temperature Butterfly Valve, Ultra High Temperature Butterfly Valve (1200 ℃)
Applicable temperature -40~950 ℃ -40~1200 ℃ (short-term 1650 ℃)
Pressure rating PN0.25MPa Class 150-600
Diameter range DN50~DN1500 DN50~DN2000
Sealing material: graphite/metal hard sealing ceramic fiber+310S alloy
3、 Typical application scenarios
Environmental Protection Engineering
RTO/RCO incineration system: butterfly valves that can withstand high temperatures of 1200 ℃ and have zero leakage.
Flue gas desulfurization pipeline: corrosion-resistant medium (such as SO ₂).
Industrial sector
Metallurgical blast furnace gas recovery: resistant to 950 ℃ dusty gas flushing.
Glass kiln flue gas emissions: require rapid opening and closing (response time ≤ 3 seconds).

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