Many valves will inevitably be used during the renovation of the waterway in our family. There are actually two types of valves commonly used in families: the first is a ball valve, and the second is a stop valve. So which of these two valves is more suitable for use in our family? What is the difference between the two? It is estimated that many friends do not know it well. For example, a friend now asks such a question: Is a stop valve or a ball valve installed on the main PPR pipe of the tap water? Which material is better? why?

What is a ball valve and what are its characteristics

Brief introduction of ball valve: In our national standard GBT21465-2008, there is a special definition of valve in the valve terminology. Among them, the ball valve is defined as follows: a ball valve is a valve in which the ball is driven by the opening and closing rod and rotates around the sliding axis of the ball. This kind of valve can be used for flow regulation and control. So it can be installed on our main pipeline or on the branch pipeline in our home.
Introduction to the characteristics of the ball valve: The first feature is the high wear resistance. The second feature is that the airtight performance is very good. The third feature is that the switch is more convenient. The fourth feature is that it has a long service life. The fifth feature is also the most important feature that I think is the relatively small fluid resistance. It can be said that the ball valve is the valve with the least fluid resistance among all valves.
Introduction to the working principle of the ball valve: In fact, the working principle of the ball valve is very simple, because the inside of the ball valve is a ball with a through hole. The ball is installed inside the valve, and the ball rotates around the centerline of the valve body during operation to achieve opening and closing. Therefore, when the ball valve is opened to the maximum angle, there is no resistance to the entire fluid.

What is the globe valve and what are its characteristics

A brief introduction to the shut-off valve: the shut-off valve is actually what we call a cut-off door. It is also the most widely used valve at present. In the process of operation, the shut-off valve actually relies on the closing principle. The closing principle is to rely on the pressure of the valve stem of the ball valve to make the sealing surface of the disc and the sealing surface of the valve seat tightly fit. In this way, the opening and closing of the fluid can be realized, so that the circulation of the medium is prevented, and the function of the valve is achieved.
The characteristics of the shut-off valve are introduced: First, the structure of the shut-off valve is relatively simple, so it is very convenient to manufacture and maintain. Second, its sealing surface is inside, it is not prone to wear and scratches, and its sealing performance is also very good. Third, the friction force of the sealing surface during the opening process is relatively smaller than that of the gate valve, and the friction resistance is higher. However, the fluid resistance of the ball valve is relatively large, and it is laborious to open and close. It is especially not suitable for some fluids with impurities and particles in the pipeline, and its adjustment performance is relatively poor.
Analysis of the principle of the globe valve: In fact, the globe valve is based on the up and down movement of the screw to achieve the adhesion of the sealing surface of the valve disc and the sealing surface of the valve seat, so as to adjust and open or close the flow. fluid.

Analysis of whether to install a ball valve or a stop valve on the main water pipeline

The first point is that we must first understand the valves installed on the water pipes, which actually control our indoor waterways. That is to say, it can realize a function of closing and opening the whole tap water in our room. So when we choose the door, we need to consider this feature.
For the second point, let's take a look at the common valve types that can be used on the main water pipeline. In fact, the first most common valve is the stop valve, and the second common valve is the ball valve. Both of these valves are used on the main pipe of the tap water.

What are the factors to consider when choosing a valve on the main PPR pipeline of tap water?

The first point is to consider our installation space. Because the ball valve is generally equipped with a hand handle, it occupies a certain space during installation. So if we choose a ball valve, we must see whether it can be installed.
The second point is to consider the convenience of our operations in the future. As everyone knows, the globe valve at the current stage is usually a first hand wheel, and we rely on turning the hand wheel to open or close this valve. Therefore, if we are difficult to operate later, we definitely do not recommend that you choose to connect the shut-off valve.

Personal suggestions for the selection of valves on the main water pipeline

The first suggestion is that if we have room for installation, I personally recommend that you choose a ball valve. Because the ball valve is relatively labor-saving to operate, and the ball valve has a very small impact on the resistance of the water flow, which means that it will not affect the water pressure in our home.
The second suggestion is that if we install the tap water main pipeline valve location space is limited, then my personal suggestion is to choose a shut-off valve. Because the handle of the ball valve will be difficult to open later if there is no space, this is our focus.