Understanding Threaded Ball Valves From Two Directions

3 Way Threaded Ball Valve is a valve whose closing part is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing.

Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. Two-piece ball valves and three-piece ball valves are a new type of valve that has been widely used in recent years. This valve is generally installed horizontally. Threaded ball valve is a type of ball valve, and the connection with the pipeline is threaded connection. There are also flange ball valves, welded ball valves, etc. Let's understand threaded ball valves from two directions:

1 Compared with other ball valves, what are the characteristics of threaded ball valves?

As a new type of ball valve device that has been widely used in recent years, threaded ball valves are widely loved and concerned by consumers. According to industry insiders, the origin of the name of the threaded ball valve is mainly attributed to the threaded connection method when it is connected to the pipeline. In terms of specific materials, it is also divided into carbon steel, stainless steel, alloy steel, low-temperature steel and ductile iron. So, compared with other ball valves, what are the characteristics of threaded ball valves?

1. The threaded ball valve is generally divided into integral type, two-stage type and three-stage type in structure. Each structure is reasonably arranged and beautifully shaped, which conforms to the aesthetics of most consumers. Among them, the two-piece and three-piece threaded ball valves are connected by butt welding and socket welding, and are equipped with international standard bracket platforms and locking devices. The driving methods can be divided into three different modes: manual, electric and pneumatic.

2. The valve seat adopts an elastic sealing structure, which is easy to start and close. The valve stem part adopts a bottom-mounted structure with an inverted seal, which effectively prevents the valve stem from being flushed out when the valve cavity is abnormal. Under such a design structure, the fluid resistance in the threaded ball valve becomes smaller, and even if the medium passes, it will not cause erosion of the valve seal.

3. It only takes half a turn to rotate from full open to full closed. The simple operation is also convenient for remote control. The movable sealing ring is easy to disassemble and install, making repair and maintenance more convenient and quick. Because of its simple structure and light weight, it can reduce the pressure of the pipeline.

According to experimental data, threaded ball valves can be used to effectively cut off and connect the medium in the pipeline under the conditions of 1-4 MPa and working temperature of -29~180 degrees Celsius, and the medium includes not only who, gas, steam but also oil, nitric acid and acetic acid and other chemicals.

2 Advantages and connection methods of threaded ball valves

As a type of ball valve, threaded ball valve has its unique advantages and connection methods. Next, the editor will give you a detailed introduction.

1. Advantages of threaded ball valves

1. A manual operation can be installed to realize manual switch of threaded ball valves. This function is not available for many other ball valves.

2. Small size, good sealing, simple installation, convenient maintenance and safe operation.

3. Seals can be divided into two types, namely soft seals and metal seals. Different seals can be used in different working conditions.

4. It can be applied to different fields, ranging from a few millimeters to a few meters.

5. Threaded ball valves can be locked to prevent others from misoperation.

2. Connection methods of threaded ball valves

1. Welding connection

The valve body is processed into a butt welding groove, and then connected to the welding groove of the pipeline, and finally fixed on the pipeline, which is very firm.

2. Threaded connection

This connection method is very simple. The internal and external threads of the atmosphere are processed and produced according to the standard of the valve body and connected to the pipeline.

3. Clamp connection

This connection method is relatively fast and easy to operate. It only needs two threads to operate.

4. Flange connection

It requires flanges at both ends of the valve body, which correspond to the flanges on the pipeline one by one, and then fixed in the pipeline.

5. Other connection methods

In addition to the above connection methods, threaded connection also includes butt clamp connection and socket welding connection. I will not give you a detailed introduction here.

The threaded ball valve has a wide range of use, strong operability, and many advantages. Now many industries have to use it. However, when you buy it, you still have to recognize the brand and choose good quality, so that the service life will be long.