Summary of Core Advantages
-Compact and low cost ‌
Butterfly valves have a simple structure, mainly consisting of the valve body, valve stem, butterfly plate and sealing assembly. They have few parts and low material usage. The manufacturing cost is usually 30% to 50% lower than that of gate valves or ball valves of the same diameter. Economy is particularly prominent in the design of large-diameter valves.
-is easy to operate and opens and closes quickly ‌

The butterfly plate can complete the opening and closing actions by rotating 90°, with a small operating torque (the opening and closing torque of the rubber-sealed butterfly valve is only 1/5 of that of the gate valve of the same diameter), and manual operation is labor-saving. When driven electrically or pneumatically, it can be opened and closed within a few seconds and is suitable for emergency shut-off scenarios.
-takes up little space and is lightweight ‌

The valve body has a short axial dimension and is lightweight, making it particularly suitable for pipeline systems with limited installation space (such as ships and high-rise buildings).
-Low fluid resistance and suitability for large diameters ‌

When fully open, the thickness of the butterfly plate only accounts for about 10% of the flow path diameter, and the flow resistance coefficient (Cv value) can reach 85% of that of ball valves of the same diameter, making it suitable for applications with low pressure drop requirements. Its structural characteristics make it an ideal choice for large-diameter valves.
-Easy to maintain and long life ‌

The modular design supports online maintenance. Replacing the sealing ring only requires disassembling the valve stem cover, which has a long maintenance cycle and low cost.
Expand application advantages

-Diversified sealing performance ‌ :
-Soft seal ‌ (rubber, polytetrafluoroethylene) suitable for low pressure, corrosive media;
-Metal seal ‌ can withstand high temperatures (up to 425 ° C and above) and high pressures (such as in steam systems), and the leakage rate is partially up to API 609 standard Class V.
-Wide medium adaptability ‌ :
It can control air, water, oil products, slurry, radioactive media, etc. Through material selection (such as stainless steel, rubber-lined), it can adapt to corrosive or granular fluids.

-Flexible drive mode ‌ :
-Electric butterfly valve ‌ Electric butterfly valve supports remote control and precise opening adjustment, suitable for automation systems;
-Pneumatic butterfly Valve ‌ Pneumatic butterfly valve has a fast response (action time is only a few seconds) and is suitable for hazardous environments.

Typical application scenarios
-Water treatment and HVAC systems ‌ : Utilizing low flow resistance characteristics to reduce pump energy consumption;
-Chemical and energy industry ‌ : Dealing with acid and alkali media through corrosion-resistant materials;
-Emergency shut-off system ‌ : Relies on quick opening and closing capability for safety.
-To sum up, butterfly valves show significant advantages in non-extreme conditions (high temperature and high pressure) through lightweight design, fast response and economy, and are a cost-effective choice for fluid control ‌.