What is the difference between one piece and two piece stainless steel ball valves?

The one-piece stainless steel ball valve is a manual valve, the structural design is integral, and the ball is stabilized by a plug head, so that it can be convenient in maintenance, and the diameter of the ball valve is also small, and the ball is put into it from one side of the valve body, and the valve seat should be screwed in.

After that, hold the ball down again.

Some non-standard one-piece ball valves have a short structure, so the best way to distinguish them is from the structure of the valve body.

The two-piece stainless steel ball valve is composed of bolts connecting the left and right valve bodies, and the ball valve is clamped by the two valve bodies when fixed, and the maintenance is relatively difficult, and the most important thing is to see how tight the screws in the middle are, which is directly related to whether the seal is tight.

In addition, it is mainly used in atmospheric pressure and high pressure environments, such as non-standard nominal diameter below DN50 is also a two-piece valve.

We must first understand their differences: one-piece and two-piece and three-piece ball valves are named according to the structure of the valve body, and the difference between them is whether they are easy to disassemble. The one-piece type is the wide-type ball valve, the two-piece type refers to the valve assembled by two parts, and the three-piece type refers to the valve assembled by three parts, which is divided into three parts: the left and right bodies and the middle body.

For example, a three-piece ball valve is the easiest to remove.

Secondly, in terms of cost: the one-piece type is the cheapest, the two-piece type is a little more expensive, and the three-piece type is the most expensive.

Based on the above two points, you can choose for yourself which one is suitable for you.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The one-piece ball valve structure is integral, and the ball is stabilized by a plug head, so that it can be convenient during maintenance, and the caliber of the ball valve is also small, and the ball is put into it from one side of the valve body, and the valve seat should be screwed in, and then the ball is pressed.

The two-piece ball valve is composed of bolts connecting the left and right two valve bodies, and the ball valve is clamped by the two-piece valve body when fixed, and the maintenance is relatively difficult, the key is to see how tight the screws in the middle are, which is directly related to whether the seal is tight.

1. The working principle of one-piece ball valve and two-piece ball valve is different: the working principle of one-piece ball valve is the mechanical pressure effect of the valve stem; The working principle of the two-piece ball valve is to make the valve open or occluded by rotating the valve.

2. The valve body of one-piece ball valve and two-piece ball valve is different: the one-piece type is fixed by a plug head; The two-piece ball valve is fixed by two pieces of the valve body clamping the ball, and the maintenance is relatively complicated, and the tightness of the bolt in the middle is very critical.

3. The closing parts of one-piece ball valves and two-piece ball valves are different: the closing parts of one-piece ball valves are a ball, and the balls rotate around the center line of the valve body to achieve opening and closing; Two-piece ball valves, on the other hand, have no special requirements.

There is no difference in the working principle, but the installation method and structural form are different.