ELECTRIC DAMPER VALVE
CORE ADVANTAGES
High temperature tolerance
The valve plate and valve seat are made of 304 stainless steel + hard alloy surfacing, with a temperature resistance of up to 450°C The shaft bushing is graphite lubricated to avoid high temperature jamming.
Low flow resistance and energy saving
Streamlined valve plate design, pressure loss <0.05MPa When fully open, the diameter matches the pipeline to reduce energy consumption.
Intelligent linkage control
Supports 4-20mA/PROFIBUS signal, interlocked with fan and dust collector Opening feedback accuracy ±1%, supports fault self-diagnosis.
Long-term maintenance-free
The shaft seal adopts V-type packing + bellows double seal to prevent dust leakage The bearing cavity is isolated from the medium, and no regular greasing is required.
TECHNICAL PARAMETERS
Item Damper butterfly valve
Nominal diameter DN200-DN3000 (customizable)
Nominal pressure PN6-PN16 (normal pressure type optional)
Valve body material Carbon steel (WCB), stainless steel (304/316)
Sealing form Metal seal/soft and metal composite seal
Medium temperature ≤450℃ (high temperature type can reach 650C)
Connection method Flange type (GB, ANSI, DIN standards)
Actuator type Part-turn electric actuator
Protection level IP65 (dust and water spray proof)
Power supply voltage AC380V/220V or DC24V
APPLICATIONS
Blast furnace gas pipeline pressure regulation
Converter flue gas recovery system
Boiler flue air volume control
Desulfurization tower inlet and outlet baffles
Underground garage smoke exhaust system
Central air conditioning fresh air conditioning
INSTALLATION AND OPERATION GUIDE
Installation requirements
It can be installed horizontally or vertically, horizontal direction is recommended for valve shaft
Asbestos gaskets are installed between flanges, and bolts are tightened diagonally
Actuator maintenance space must be reserved (≥50cm)
Debugging steps
Manually confirm that the valve plate is not blocked
Power on and set the travel switch (fully open /fully closed position)
Calibrate the corresponding relationship between 4-20mA signal and opening
SELECTION POINTS
Select the seal type according to the medium
Metal seal: high temperature dusty gas (such as boiler flue gas)
Soft and metal composite seal: low temperature clean air (<150C)
Actuator torque calculation
Formula: Torque (N·m) = (pipeline pressure difference × valve plate area × lever arm) × safety factor (1.2-1.5) or directly provide working condition data for engineers to match
FAQ
Q: Will the valve plate deform at high temperatures?
A: The valve plate adopts a reinforced rib structure design, and the thermal expansion coefficient matches the valve body, and it will not deform within 450°C.
Q: Does sulfur-containing flue gas require special materials?
A: It is recommended to use 316L valve body + nickel-based alloy sealing surface, which is resistant to sulfuric acid/hydrogen sulfide corrosion.
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