When talking about butterfly valve, we should mention wafer butterfly valve and flange butterfly valve first, but what is the difference between wafer and flange butterfly valve? I’ll list several points below:
1. Definition:
Whats is Wafer Butterfly Valves?
Wafer Butterfly Valve: This valve is designed to fit between two flanges. They’re called “wafer” Because their thin profile looks like a wafer. We need to install wafer with a long stud bolts, run through the length of the valve to secure it between the flanges.
Whats is Flange Butterfly Valves?
Flange Butterfly Valve: This valve has its own flanges on two side of the valve body, which are bolted to the corresponding flanges on the pipework.
2. Connection Standards:
a) Wafer Butterfly Valve: This valve is normally for multi-connection standard, so customer choose to buy wafer type when you don’t know what the pipe flange connection is.
b) Flange Butterfly Valve: Flange butterfly valve is normally single standard connection. You can only connection the it with corresponding standard flanges.
3. Application:
a) Wafer Butterfly Valves: Commonly used in a narrow space applications and for systems where ease of installation is a priority. Suitable for low to medium pressure applications.
b) Flanged Butterfly Valve: If you have enough space to install the valve, flange type butterfly valve is the best option, because it can work with medium to high pressure with tight sealing surface.
4. Cost:
a) Wafer Butterfly Valve: Generally, they’re less expensive than flange valves due to their simpler design and fewer components.
b) Flange Butterfly Valve: The additional material and complexity in design make them more expensive.
Choosing between these two types of butterfly valves depends on the specific requirements of the application, including space constraints, pressure requirements, frequency of maintenance, and budget considerations.
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