Working Principle And Characteristics Of Stainless Steel Ball Valve

The stainless steel ball valve can be closed tightly with only a 90-degree rotation and a small torque. The completely equal internal cavity of the valve provides a straight flow channel with little resistance for the medium. The main feature of the ball valve is its compact structure, easy to operate and maintain. The stainless steel ball valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The ball valve body can be integral or combined. This type of valve should generally be installed horizontally in the pipeline. Stainless steel ball valve classification: stainless steel pneumatic ball valve, stainless steel electric ball valve, stainless steel manual ball valve. Stainless steel ball valve materials are divided into 304, 316, 321 stainless steel ball valves.

Working principle

The working principle of the ball valve is to make the valve unblocked or blocked by rotating the valve core. The ball valve switch is light, small in size, can be made into a large diameter, reliable in sealing, simple in structure, easy to maintain, the sealing surface and the spherical surface are often closed, and it is not easy to be eroded by the medium, and it is widely used in various industries.

The ball valve and the plug valve belong to the same type of valve. Only its closing part is a sphere. The sphere rotates around the center line of the valve body to achieve opening and closing.

The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. The ball valve is a new type of valve that is widely used.

Advantage of stainless steel ball valve

1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.

2. Simple structure, small size and light weight.

3. It is tight and reliable, and the sealing surface material of the ball valve is widely used in plastics, with good sealing performance, and it has also been widely used in vacuum systems.

4. It is easy to operate and open and close quickly. It only needs to rotate 90° from fully open to fully closed, which is convenient for remote control.

5. The maintenance is convenient, the structure of the ball valve is simple, the sealing ring is generally movable, and it is convenient to disassemble and replace.

6. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, and the medium will not cause erosion of the valve sealing surface when the medium passes.

7. It has a wide range of applications, with a diameter ranging from a few millimeters to a few meters, and can be applied from high vacuum to high pressure.

Ball valves have been widely used in petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rockets and other departments, as well as people's daily life.

Features

Stainless steel ball valve are divided into O-shaped ball valves and V-shaped ball valves. The O-type ball valve adopts a floating structure, the core is a precision casting, the surface is plated with hard chromium, and the valve seat is made of reinforced polytetrafluoroethylene. The diameter of the flow channel is the same as that of the pipe. Leakage, generally used as on-off valve, especially suitable for high-viscosity, fiber-containing, granular media; V-shaped ball valve adopts a fixed structure, with a V-shaped cut on the core, which can achieve proportional adjustment, and the flow characteristics are approximately equal percentages.

Depending on the process equipment, pneumatic or electric can be selected to form pneumatic ball valves and electric ball valves. The pneumatic ball valve must be equipped with a valve positioner to achieve proportional adjustment, and the electric ball valve must be equipped with electronic electric actuators or servo amplifiers to achieve proportional adjustment. Wait.

From the material point of view, it can be divided into: carbon steel ball valve, stainless steel 304 ball valve, 316 ball valve and copper ball valve

In terms of application, it can be divided into: high pressure ball valve and low pressure ball valve

High-pressure ball valve: Mainly used in petroleum, natural gas, hydraulic oil, construction machinery and other industries

Low-pressure ball valve: Mainly used in non-corrosive pipelines such as water as the medium!