1. Introduction

A stainless steel ball valve is a type of valve that uses a spherical disc to control the flow of fluid through a pipeline. Here is a detailed introduction:

Definition and Composition :

It is a mechanical device used to regulate the flow of liquids or gases in a piping system. It mainly consists of components such as the valve body, ball, valve stem, valve seat, and sealing parts. The valve body is usually made of stainless steel materials such as 304 or 316. The ball is the core component, and the valve stem connects the ball and the operating device. The valve seat forms a sealing pair with the ball, and the sealing parts prevent medium leakage.

Working Principle:

The opening and closing of the valve are realized by the rotation of the ball. When the hole in the ball is aligned with the valve body channel, the valve is open, allowing the medium to flow through. When the ball rotates 90 degrees and the hole is perpendicular to the valve body channel, the medium flow is blocked, and the valve is closed.

Classification:

• By structure: It can be divided into floating ball valves, fixed ball valves, and elastic ball valves. The floating ball valve has a simple structure and is widely used in medium and low-pressure situations; the fixed ball valve is suitable for high-pressure and large-diameter valves; the elastic ball valve is suitable for high-temperature and high-pressure media.

• By channel position: It can be divided into straight-through, three-way, and right-angle types. The three-way ball valve can be further divided into T-type and L-type. The T-type can connect three orthogonal pipelines, while the L-type can only connect two orthogonal pipelines.

• By composition: It can be divided into one-piece, two-piece, and three-piece types.

Advantages

• Small fluid resistance: The flow channel is straight-through, and the resistance coefficient is equal to that of the same-length pipe section.

• Reliable sealing: Both soft-sealing and hard-sealing structures can achieve good two-way sealing with a very low leakage rate.

• Convenient operation: It only takes a 90-degree rotation of the handle to quickly switch the valve state, which is labor-saving and easy to identify.

• Easy maintenance: Some types of ball valves can replace the valve seat online, reducing maintenance costs and downtime.

• Wide range of applications: It can be used in various media such as water, oil, gas, and corrosive media, and is suitable for various working conditions such as high pressure, high temperature, and vacuum.

2. Application

It is widely used in petroleum, chemical, metallurgy, electric power, municipal water affairs, food, medicine, shipbuilding, and other industries, and is used in the transportation pipelines of various media and systems with high hygienic requirements.

3. Technical standard

4. Drawing

5. Size