The difference between lug butterfly valve and wafer butterfly valve

Today Bundor Valve introduces you to the difference between the lug butterfly valve and the wafer butterfly valve

I believe that friends who know butterfly valves know that there is a kind of butterfly valve called lug butterfly valve, which looks completely different from our common wafer butterfly valve and flange butterfly valve. Some people say that lug butterfly valve is wafer butterfly valve, but there are also People do not agree with this statement. This article will introduce you to the difference between the lug type butterfly valve and the wafer butterfly valve.

There are four holes on the valve body of the wafer butterfly valve, and it is only necessary to use long bolts to penetrate the connection hole and flange hole of the wafer butterfly valve during installation. The installation is very convenient, the disadvantage is that the stability is poor.

There are two ways to connect the lug butterfly valve:

1. The through-type pressure hole, the installation method is the same as that of the wafer butterfly valve, and the stability is worse than that of the flange type connection.

2. Threaded hole type pressure hole, the installation method is different from the wafer type and flange type. At this time, the pressure hole of the lug type butterfly valve is equivalent to a nut. When connecting with the pipe flange, the bolt passes through the flange. Just tighten the pressure hole of the lug butterfly valve directly, and fix the bolts on the flange end with nuts. This installation method is as stable as a flanged butterfly valve.

 

Pre: Can butterfly valves be used for hot water?

Next：Comparison of pin butterfly valve and pinless butterfly valve

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