What is the difference between lug type butterfly valves and wafer type butterfly valves?
Butterfly valves are common in both the wafer and lug types. When you are choosing and selecting, you will be confused about which type of butterfly valve to choose. The biggest difference between them is the different connection methods. Wafer-type butterfly valves are connected to the pipeline by clamping, while lug-type butterfly valves are connected to the pipeline by flange. Because of the different connection methods, the installation methods of the two are also different.
Overview
Differences in connection:
Wafer type butterfly valve have four bolt holes, this kind of butterfly valve in the installation, only need to use long bolts on the pipeline flange holes and the bolt holes of the wafer butterfly valve through the connection, installation and disassembly are very convenient, but there is a disadvantage is the stability of the relatively low.
There are two types of connections for lug type butterfly valves, because the lug type butterfly valves have different bolt holes, they can be divided into penetration type pressure holes and threaded hole type pressure holes. The pressure hole of penetration type is similar to the wafer type butterfly valve, and the installation method is the same, and the stability will be better than the wafer type.
Picture:
