What's The Difference Between Wafer And Lug Butterfly Valve?
Both wafer and lug butterfly valves are types of quarter-turn valves used to regulate or isolate the flow of fluids in pipelines. The main difference is the way they are mounted on the pipeline.
A wafer butterfly valve is mounted between two flanges in the pipeline by means of bolts or studs. It is designed to fit between ANSI flanges and is much thinner than a lug butterfly valve. Because it does not have lugs, it is less expensive and easier to install than a lug butterfly valve. However, it can only be installed between flanges and it is not suitable for end-of-line service.
The lug butterfly valve is designed to install on a pipeline with lugs that protrude from the valve body. These lugs can be bolted to the pipeline using threaded rods or bolts, making it suitable for end-of-line service. The lugs also provide a more secure connection, making it ideal for applications where high pressure or stress is involved. However, it is bulkier and more expensive than a wafer butterfly valve.
In summary, wafer butterfly valves are thinner and less expensive than lug butterfly valves, they can only be installed between flanges. Lug butterfly valves, on the other hand, are bulkier and more expensive, but they can be installed anywhere in the pipeline and provide a more secure connection.
