Electric butterfly valve is a rotary valve driven by an electric actuator. It is widely used in the field of industrial automation control due to its simple structure, fast opening and closing, and low cost. Its main uses include:
1. Fluid regulation and cutoff
Water treatment industry: used in water supply and drainage systems, sewage treatment plants, to control water flow switches and flow regulation.
HVAC: adjust the on and off of hot and cold water or air media to achieve temperature and pressure control.
2. Chemical and petroleum industry
Corrosive medium control: suitable for non-viscous fluids such as acid, alkali, and salt solutions (fluorine-lined or stainless steel materials are required).
Oil product transportation: used for pipeline switches for crude oil and refined oil in oil refining, storage and transportation systems.
3. Food and pharmaceutical industry
Sanitary application: stainless steel or PTFE-lined butterfly valves are used to meet aseptic requirements for beverage, dairy products and liquid medicine transportation.
4. Energy and power industry
Cooling water system: control the on and off of circulating water and boiler feed water in power plants.
Gas system: used for opening and closing natural gas and liquefied gas (LNG) pipelines (explosion-proof actuators are required).
5. Environmental protection and flue gas treatment
Desulfurization and denitrification system: adjusts flue gas flow, suitable for high temperature and corrosive exhaust gas environments.
Advantages and characteristics of electric butterfly valves:
1. Fast opening and closing: 90° rotation can be fully opened or fully closed, suitable for frequent operation.
2. Compact structure: small footprint, suitable for large-diameter pipelines.
3. Good economy: lower cost and easier maintenance than gate valves and ball valves.
4. Electric butterfly valves are suitable for the control of medium and low pressure, large flow, and non-high viscosity media, but they need to be selected carefully under high pressure or severe working conditions (such as more particulate matter).