A ball valve is a widely used flow control valve in industrial pipeline systems. With its simple structure, excellent sealing performance, and easy operation, it plays a crucial role across various industries.

1. Basic Functions

Ball valves are rotary-type valves that control fluid flow by rotating a spherical closure element 90 degrees. Their primary functions include:

(1) Shut-off and On/Off Control

Provides quick opening and closing, making it suitable for pipeline systems requiring frequent operation.

(2) Flow Regulation

Certain specially designed ball valves allow flow adjustment to accommodate different operating conditions.

(3) Bi-directional Sealing

Ensures reliable sealing in both flow directions, enhancing pipeline system safety.

(4) Emergency Shut-off

Some ball valves are equipped with actuators for emergency shut-off, improving overall system safety.

2. Key Features

Due to their unique structure and material selection, ball valves offer the following advantages:

(1) Excellent Sealing Performance

Utilizes soft seals (PTFE, rubber) or metal seals to ensure zero leakage.

(2) High Pressure and Temperature Resistance

Capable of withstanding high pressures (up to Class 2500) and extreme temperatures (some metal-seated ball valves can operate above 500°C).

(3) Easy Operation

Available with manual handles, gear operators, electric, or pneumatic actuators to meet various automation requirements.

(4) Long Service Life

Minimal friction during operation, making it suitable for frequent and long-term use.

3. Typical Applications

Due to their versatility, ball valves play a critical role across various industries, including:

(1) Oil & Gas Industry

Used in transmission pipelines, distribution systems, and storage facilities, ball valves provide reliable control over high-pressure and high-temperature media, ensuring leak prevention and system safety.

(2) Chemical & Pharmaceutical Industry

Commonly employed for handling corrosive media such as acids, alkalis, and solvents. The use of corrosion-resistant materials (e.g., stainless steel, Hastelloy, PTFE lining) extends service life and enhances reliability.

(3) Water Treatment & Environmental Protection

In wastewater treatment, seawater desalination, and municipal water supply networks, ball valves regulate and isolate flow, ensuring stable and secure fluid transportation.

(4) Power & Energy Sector

Ball valves are used for precise control of steam, cooling water, and fuel flow in boiler systems, condensate recovery, and gas transmission, improving energy efficiency and operational safety.

(5) Marine & Offshore Engineering

Applied in offshore oil platforms and shipboard piping systems, ball valves control seawater, fuel, and ballast water while meeting stringent corrosion resistance requirements in harsh marine environments.