Motorized Louver Damper & Flue Gas Butterfly Valve
HSX Motorized Louver Dampers and Flue Gas Butterfly Valves feature multiple aerodynamic synchronized blades driven by intelligent electric or electro-hydraulic actuators. Engineered for high-temperature flue gas, hot air, and corrosive exhaust ducts in power plants, cement kilns, and metallurgical smelters with <= 0.5% seal leakage.
Model Series & Engineering Parameters High-Temp Damper
| Model Series | Duct Size (mm) | Number of Blades | Actuator Type | Max Temp (°C) | Leakage Rate |
|---|---|---|---|---|---|
| MLV-600 | 600 x 600 mm | 2 – 3 Blades | 2SA3 Electric / DYT | 350°C | <= 0.5% |
| MLV-1000 | 1,000 x 1,000 mm | 4 – 5 Blades | 2SA3 Electric / DYT | 450°C | <= 0.5% |
| MLV-1500 | 1,500 x 1,500 mm | 6 – 8 Blades | Intelligent Electric | 550°C | <= 0.5% |
| MLV-2500 | 2,500 x 2,500 mm | Multi-Section | Electro-Hydraulic | 650°C | <= 0.2% |
| MLV-4000+ | 3,000 – 5,000 mm | Heavy Louver | Dual Sync Drive | 650°C | 100% Air Purge |
Ordering Nomenclature Guide: MLV - [Duct Width x Height mm] - [Temp Code: 350/450/650] - [Actuator Spec] - [Air Purge: Y/N].
Aerodynamic Low-Torque Blade Balancing
Opposed-blade movement balances aerodynamic wind loads.
Aerodynamic Opposed-Blade Motion
Adjacent blades rotate in opposite directions, balancing airflow torque and ensuring linear flow throttling characteristics.
Thermal Expansion Relief Shafts
Outboard bearing housings with self-aligning graphite bushings isolate bearings from high flue gas heat.
100% Zero-Leakage Air Seal Option
Dual-blade cavity with heated seal air blower creates positive pressure barrier, preventing hazardous flue gas bypass.
Corrosion & Acid Dewpoint Resistance
316L, 254SMO, or ceramic-coated blades resist sulfuric and hydrochloric acid condensation in desulfurization ducts.
Proven in Severe Plant Environments
Delivering high thrust and zero-drift actuation across critical heavy industrial facilities.
Thermal Power FGD & SCR
Flue gas desulfurization bypass, selective catalytic reduction inlet isolation.
Cement Kiln Preheaters
Tertiary air duct dampers, raw mill exhaust fan isolation.
Steel Sintering & Pelleting
Main exhaust louver dampers, waste heat recovery hot air regulation.
Chemical Incineration Flues
Hazardous waste incinerator quench tower dampers.
Request Technical Quotation & Sizing Proposal
Submit your required parameters, operating duty, or project drawings for Motorized Louver Damper & Flue Gas Butterfly Valve. Our export engineering team will review your specifications and provide an official quotation within 24 hours.