Whether to use a butterfly valve vs. a globe valve is based on your need for flow control precision versus space efficiency. The former uses quarter-turn disc rotation and is designed for high-flow, fast on/off operation. Meanwhile, the latter one uses linear stem motion and is designed for precise throttling control.
Here, we discuss the difference between a butterfly valve and a globe valve in technical detail to assist engineers in their selections.
What is the Difference Between Butterfly Valve and a globe valve?
Flow Capacity:
Butterfly valves offer limited flow control but perform excellently in quick shut-off operations. They offer a straight-through flow path, whereas the disc remains at the center but allows fluid to pass through with less obstruction. Thus making them very suitable for use in large diameter piping or when precise flow control is not essential.
On the other hand, globe valves are suited to operate in throttling conditions due to their excellent flow control capacity. They utilize a “Z-shaped” flow path that forces the media to change direction twice. This makes them ideal for systems needing precise flow adjustments, such as in steam or chemical processes.
Pressure Drop:
The butterfly valve normally experiences a low-pressure drop because of the design and short travel path of the disc. Additionally, it provides a much higher flow coefficient (Cv) for the same pipe size.
In contrast, the linear movement and the seal provided by the disc make the globe valve have a high-pressure drop. This results in a lower flow coefficient (Cv).
Throttling Precision:
Butterfly valves are more appropriate for rough flow control. Although they are able to regulate flow, the positioning of the disc may lead to unequal distribution of the flow when the valve is partially opened.
In cases where precise flow control or ramping is needed, the globe valve is the best option. The globe valve is considered the industry benchmark for accurate and consistent throttling control. This is because the linear motion of the plug allows for minute adjustments in flow.
Pressure, Temperature, and Media Limits:
Butterfly valves are suited best for use in large water pipelines, cooling water, and process fluids. These valves are suitable for applications involving high flows at low pressures. Although some premium valves can withstand very high temperatures, these valves are usually applied to moderate temperature liquid transfer applications.
Conversely, globe valves should be employed where there is an application of high pressure and temperature, such as steam and volatile gases. Their durable seating design handles thermal expansion and precise regulation without compromising the seal.
Installation Space and Cost:
The butterfly valve is designed with an extremely thin “wafer” or “lug” body construction. This means that it is much lighter and smaller in size. It needs a lot less physical construction to mount it in large facilities. It is also much easier to install than others since it costs a lot less money in terms of labor hours.
For globe valves, due to the complex S-shaped inner body, a lot more cast iron or forged metal parts are required. As a result, they become much heavier and costlier than any other type of valve. In many cases, they are even installed in concrete pipes.
| Feature | Butterfly Valve | Globe Valve |
| Flow Path | Straight-through | Tortuous (Z-pattern) |
| Pressure Drop | Low | High |
| Flow Capacity (Cv) | High | Low |
| Control Type | Coarse Regulation / On-Off | Precise Throttling |
| Ideal Media | Water, Slurries, Cooling Liquids | Steam, High-Pressure Gas |
| Weight & Size | Lightweight and Compact | Heavy and Large |
| Relative Cost | Low | High |
What Valve to Use in Specific Scenarios?
Steam Boiler Systems:
- Globe valves should be used in feedwater control lines and steam header lines when high-pressure throttling is required.
Water Treatment Plants:
- Butterfly valves are recommended for large-diameter intake lines to save on space and operation costs.
Chemical Plants:
- Globe valves should be employed in dosing lines to ensure accurate dosing of chemicals because of their precise flow control characteristics.
Cooling Towers:
- Butterfly valves are suggested for isolation and rough balance in chilled water loops.
Isolation Valves:
- Butterfly valves are recommended due to their quick opening or closing characteristic through 90-degree rotation.
Gate Valve vs Globe Valve vs Butterfly Valve: Which to Choose?
The difference between a gate valve, a globe valve, and a butterfly valve centers on the balance of control and speed. Here’s a comparison table for better understanding.
| Features | Gate Valve | Globe Valve | Butterfly Valve |
| Motion | Linear | Linear | Rotary (90°) |
| Throttling | Poor (not ideal) | Excellent | Fair |
| Weight | Moderate | Heavy | Lightweight |
| Pressure Drop | Very Low | High | Low |
Selection Criteria for Gate Valve: Preferred for total closure/opening isolation in linear flow systems with minimal pressure drop. Not used for throttling since it is likely to vibrate, erode, and wear out with partial closure.
Selection Criteria for Globe Valve: Recommended for flow modulation due to its S-flow design. Although it modulates flow effectively, it has a high pressure drop and high maintenance requirements.
Selection Criteria for Butterfly Valve: Used when weight and economic constraints prevail for large pipe applications. It has a small 90-degree turn movement and low pressure drop while offering better throttling than standard butterfly valves.
Real Sample of Case Study in
Emerson Automation Process Control Upgrade (Fisher Control-Disk Innovation)
For decades, chemical and power plants relied on globe valves for critical flow control. This is because conventional butterfly valves cause unstable flow behavior at small openings. Seeking a lighter and more cost-efficient solution, Emerson Automation Solutions developed the Fisher Control-Disk butterfly valve with improved flow geometry.
In comparative trials, this design introduced an equal-percentage flow characteristic, allowing better control performance similar to traditional globe valves. The results showed that redesigned butterfly valves could match globe valve tuning behavior while reducing weight, cost, and system footprint.
What Standards Should These Valves Adhere To?
The valves employed within industries need to adhere to international standards for various reasons. They include:
API 609:
- The standard deals with the specifications for designing and rating butterfly valves with respect to their pressure and temperature limits.
BS EN 13709:
- The European standard specifies the technical guidelines related to globe valves made from industrial steel and suitable for operating at high temperatures.
ISO 9001:
- The ISO certification indicates that there is a standardized production process.
SIL 2/3:
- They indicate safety integrity level 2 and safety integrity level 3 for automated valve assemblies.
Conclusion
The knowledge of the difference between the butterfly valve vs globe valve helps to achieve efficiency and durability of the system. Butterfly valves are masters of efficiency since they offer high flow capacity and lower cost in transporting large amounts of liquids. Meanwhile, globe valves excel in precision and are required for high-pressure throttling and steam applications.
CTGV is a specialized butterfly valve manufacturer in China with extensive manufacturing capabilities. We operate a 20,000-square-meter facility with CNC machining centers and modern testing laboratories. From casting to final assembly, CTGV manages the full production process and holds CE, ISO, and API certifications to meet global engineering requirements.
Contact our team today to receive a technical quote for your next industrial piping project.
