Trunnion Ball Valve Material WCB PN100 DN150 Used To Control Fluid Media

Trunnion Ball Valve Material WCB PN100 DN150 Used To Control Fluid Media

Ball Valve 

   A ball valve is a common valve type that controls the flow of media through the rotation of a sphere. The sphere has a through-hole. When the axis of the hole aligns with the pipeline axis, the valve is fully open, allowing the media to flow smoothly. When the sphere is rotated 90 degrees, with the axis of the hole perpendicular to the pipeline axis, the valve is fully closed, blocking the flow of media. It features a simple structure, excellent sealing performance, and rapid opening and closing. It is widely used in numerous industries, including the petroleum, chemical, power, and water supply and drainage, to control various types of fluid media.

Ball Valve Specifications

How to choose the right valve for a specific application?

Media Characteristics

Media Type: Identify the media passing through the valve, whether it is a gas (e.g., air, natural gas), a liquid (e.g., water, oil, acid-base solutions), a slurry (e.g., ore slurry, mud), or solid particles. For example, ball valves, butterfly valves, or gate valves are typically used for natural gas pipelines, while knife gate valves may be more suitable for slurry transmission.

Temperature and Pressure: Understand the operating temperature and pressure range of the media. In high-temperature environments, valve materials must exhibit good thermal stability and creep resistance, such as high-temperature alloy steels. For low-temperature environments, consider low-temperature toughness, such as low-temperature stainless steels and copper alloys. For high-pressure systems, valves require higher structural strength and sealing performance, such as high-pressure gate valves and high-pressure globe valves.

Corrosiveness: If the media is corrosive, choose valves made of corrosion-resistant materials. For example, for transporting strong acids and bases, fluorine-lined valves, which are lined with corrosion-resistant materials such as polytetrafluoroethylene, can be selected. For moderately corrosive media, stainless steel valves are a common choice.

Flow Control Requirements

Flow Control Accuracy: If precise flow regulation is required, such as controlling the feed rate of raw materials in chemical production, control valves and needle valves should be considered. They can precisely change the cross-sectional area of ​​the fluid channel, thereby achieving precise flow control.

Full-Open/Close Requirements: If the only requirement is to open or close the medium, gate valves, ball valves, and butterfly valves are commonly used. Gate valves offer excellent sealing performance and are suitable for shutoff applications with strict sealing requirements; ball valves open and close quickly and are easy to operate; butterfly valves are compact and have high flow capacity, making them suitable for rapid opening and closing of large-diameter pipelines.

Installation and Maintenance Requirements

Installation Space: In applications with limited space, such as piping systems on ships and high-rise buildings, compact valves (such as butterfly valves and ball valves) are more advantageous. However, in industrial plants with ample space, larger valves such as gate valves can also be easily installed.

Maintenance Ease: Some valves are relatively simple to maintain, such as ball valves, due to their simple structure and limited internal parts, making them easy to inspect and replace in the event of a fault. In contrast, some control valves have complex structures, making maintenance more difficult and costly.

Control Methods

Manual control: Suitable for applications requiring less frequent operation or a low degree of automation, such as manual gate valves and ball valves in small water supply and drainage systems and small industrial installations.

Electric control: Commonly used in systems requiring remote control and a high degree of automation, such as large chemical plants and urban water supply dispatching centers. Electric ball valves and electric butterfly valves can be remotely opened and closed via the control system, and their opening can also be adjusted.

Pneumatic control: Pneumatic butterfly valves and pneumatic ball valves are often used in applications with a compressed air source and requiring fast valve actuation, such as clean piping systems in the food and pharmaceutical industries.

Hydraulic control: Suitable for high-pressure, large-diameter valves requiring high actuation torque, such as large turbine inlet valves in hydropower stations. Hydraulic control can provide sufficient power to operate the valves.

Cost Factors

Purchase cost: Valves vary significantly in price depending on their type, material, and specification. Generally speaking, gate valves and butterfly valves have relatively low procurement costs, while valves made of special materials (such as titanium alloys) or with special functions (such as high-precision control valves) are more expensive. Operating costs: These include valve energy consumption (electric, pneumatic, and hydraulic valves consume electricity, compressed air, and hydraulic oil during operation), maintenance costs (such as replacement of seals and parts), and more. For example, while electric valves may cost more to purchase than manual valves, in large-scale automated systems, their high operational efficiency and low labor costs over the long term may result in lower overall operating costs.

In addition, when selecting valves, it's important to refer to relevant industry standards and specifications to ensure they meet the safety and environmental requirements of the intended use.

Who we are

   SND is headquartered in Wu An Industrial Park, Hebei Province. It is a modern valve manufacturing company integrating R&D, production, sales and services. The company has been deeply involved in the field of fluid control for more than 20 years, focusing on providing high-quality valve products and customized solutions for industries such as petrochemicals, electric power and energy, municipal water services, metallurgy and shipbuilding, and medicine and food.

    The company's main products include: ball valves, gate valves, stop valves, butterfly valves, check valves, regulating valves, special valves, etc. The product materials include cast iron, cast steel, stainless steel, alloy steel, etc., which can meet the needs of complex working conditions such as high temperature and high pressure, corrosion resistance, and wear resistance. Relying on advanced CAD/CAE design systems, CNC machining centers and intelligent testing equipment, the company continues to improve product accuracy and performance, and has passed ISO 9001 quality management system certification, API 6D/API 607 and other international authoritative certifications to ensure that products meet domestic and international standards.