The electric regulating butterfly valve is an automated valve equipped with a high-precision electric actuator (with a servo control unit). Powered by electricity, it continuously adjusts the butterfly plate within a 0-90 degree range, achieving precise control of pipeline flow and pressure. Its core advantages lie in "precise adjustment + efficient control": the electric actuator supports 4-20mA/0-10V analog signals, providing real-time valve position feedback with an adjustment accuracy of ±1%.
The butterfly valve features a small size, low flow resistance (flow resistance coefficient ≤0.2), and fast response, making it suitable for medium- and low-pressure pipeline systems requiring dynamic adjustment. It is widely used in automated flow control scenarios in industries such as water treatment, HVAC, chemical, and power.
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electric regulating butterfly valve Technical parameters
| AMBIENT TEMP | -10~+60°C |
| NOMINAL PRESSURE | 0~1.0 Mpa |
| CONTROL VOLTAGE | AC110V,AC220V,AC380V,DC24V |
| SIZE | DN50-DN300 |
| CONTROL WAY | ON-OFF TYPE,ADJUSTABLE TYPE (IT CAN BE SET AS PROPORTIONAL IF REQUESTED DURING ORDER) |
electric regulating butterfly valve Structure
Soft Seal: Made of materials such as rubber and PTFE, suitable for low temperature, low pressure, and clean media (such as clean water and air), with a low leakage rate (≤0.01% KV value).
Hard Seal: Metal-to-metal seal (such as stainless steel + weld overlay alloy), resistant to high temperature (≤450℃), high pressure (≤42MPa), and corrosive media (such as acid and alkali wastewater), but with high friction on the sealing surface, requiring regular maintenance.
Butterfly Plate: Circular valve disc, installed in the direction of the pipe diameter, controlling the fluid passage through rotation.
Valve Body: Cylindrical passage, providing a fluid flow path.
Electric Actuator: The core drive component, available in on/off type (direct switching) and regulating type (continuous regulation), supporting forward and reverse rotation control.
electric regulating butterfly valve Performance Advantages
Fast Response: Driven by the electric actuator, a 90° rotation completes the on/off action, with an opening and closing time ≤15 seconds, 3-5 times faster than a gate valve, suitable for emergency shut-off or frequent regulation scenarios (such as gas leak protection and chemical reactor feed control). High Adjustment Precision: Supports continuous linear adjustment, with valve position accuracy reaching ±0.5%~±1%, precisely matching the system's fine-grained flow control requirements (such as temperature fine-tuning in heating networks).
Low Flow Resistance: When the butterfly valve is fully open, the flow path is nearly straight, resulting in a low flow resistance coefficient (≤0.5), far lower than that of gate valves (5-10). This leads to low pressure loss and superior energy efficiency (especially suitable for high-flow pipelines, such as municipal water supply and drainage systems with diameters above DN1000).
Compact Structure: The valve body length is only 1/3 to 1/2 that of a gate valve of the same diameter, and its weight is 40%-60% lighter, facilitating installation in confined spaces (such as offshore platforms and subway tunnels), reducing transportation and installation costs.
Strong Adaptability: Through material selection, it can cover a wide temperature range from -196℃ (cryogenic LNG) to 1200℃ (high-temperature flue gas). High-pressure butterfly valves can withstand pressures up to 42MPa (equivalent to high-pressure ball valves), making them suitable for extreme operating conditions such as petroleum refining and hydrogenation units.
Applications of Electric Regulating Butterfly Valves
Industrial Sector
Petrochemical Industry: Controlling the flow rate of crude oil/refined oil pipelines, and catalyst injection flow rate in reactor feeding systems (requires corrosion resistance, using PTFE-lined sealing surfaces or Hastelloy valve bodies).
Power Industry: Regulating boiler steam bypass flow rate, and cooling water circulation system flow rate (requires large diameter DN800-DN2000, high reliability to avoid downtime).
Iron and Steel Metallurgy: Controlling the flow rate of blast furnace cooling water systems and rolling mill emulsion circulation pipelines (requires high pressure resistance ≤1.6MPa, impact resistance).
Municipal Sector
Water Treatment: Regulating the effluent from waterworks clear water tanks, and air volume in sewage treatment plant aeration tanks (requires large flow rate regulation DN500 and above, low leakage rate ≤0.01%).
Heating Supply: Balancing the primary/secondary network water flow rate of heating stations, and the flow rate of central air conditioning water circulation pipelines (requires temperature adaptability -10℃~120℃, rapid response to avoid room temperature fluctuations).
Environmental Protection Sector
Wastewater Treatment: Controlling the influent flow rate of the bar screen well and the aeration volume of the biological treatment tank (requires anti-clogging design to reduce media retention).
Exhaust Gas Treatment: Adjusting the influent flow rate of VOCs treatment equipment and the absorbent injection volume of the desulfurization and denitrification system (requires gas sealing to prevent toxic gas leakage).
New Energy Sector
Photovoltaic Cleaning: Adjusting the pure water flow rate and precisely controlling the water volume for module cleaning (requires high-precision flow rate adjustment error ≤2% and clean materials).
Hydrogen Energy Applications: Controlling the hydrogen/oxygen pipeline flow rate of the electrolyzer and the hydrogen storage tank pressure of the hydrogen refueling station (requires low leakage and material compatibility to avoid hydrogen embrittlement).
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