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The difference between one-piece and two-piece stainless steel ball valve

Mar 29, 2022

There are also many types of ball valves. There are one-piece ball valves and two-piece ball valves. Many people can't tell the difference between these two ball valves. So what is the difference between them? Let's take a look together:

First of all, the working principle is different: the working principle of the one-piece ball valve is the mechanical pressure of the valve stem; the working principle of the two-piece ball valve is to make the valve unblocked or blocked by rotating the valve.

The second is that the valve body of the ball valve is different: the one-piece stainless steel ball valve is a manual valve, the structural design is integral, and the ball is stabilized by a plug, which is convenient for maintenance, and the diameter of the ball valve is also small. , the ball is put in from one side of the valve body, the valve seat must be screwed in, and then the ball is pressed; the two-piece ball valve is fixed by two pieces of the valve body clamped by the ball, the maintenance is relatively complicated, and the tightness of the bolt in the middle is very important. .

Finally, the closing parts of the ball valve are different: the closing part of the one-piece ball valve is a ball, and the ball rotates around the center line of the valve body to achieve opening and closing of a valve; while the two-piece ball valve has no special requirements.

Ball valves are small in size, simple in structure and easy to maintain, so they are used in many places. Whether to use a one-piece ball valve or a two-piece ball valve depends on which one is more suitable for your application.


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