Manual Butterfly Valve - Ningjin Thriveon Valve Co., Ltd.|Manual Wafer Butterfly Valve DN150

Introduction

In modern industrial systems, **manual butterfly valve** plays a critical role in controlling fluid flow. These valves are widely used across sectors such as water treatment, HVAC, and chemical processing due to their simplicity, reliability, and cost-effectiveness. This article provides an in-depth analysis of the **manual butterfly valve**, including its technical specifications, advantages, and applications. Additionally, we will explore the **manual butterfly valve manufacturer**, Ningjin Thriveon Valve Co., Ltd., and reference authoritative sources like the National Institute of Standards and Technology (NIST) to ensure the accuracy of our findings.

Understanding Manual Butterfly Valves

**Manual butterfly valves** are a type of quarter-turn valve that uses a disc to regulate flow. Unlike **pneumatic actuator butterfly valves** or **electric actuator butterfly valves**, manual valves are operated manually via a lever or gear. This design simplifies the structure, reduces maintenance costs, and makes them ideal for applications where automation is unnecessary. According to the NIST, "standardized valve designs are essential for ensuring interoperability and safety in industrial systems."

Key components of a manual butterfly valve include the **body**, **disc**, **stem**, and **seat**. The body is typically made of materials like **grey cast iron**, **ductile cast iron**, **stainless steel 304/316**, or **carbon steel**, depending on the application. The disc, which controls the flow, is often constructed from **ductile cast iron** (with coatings like **nickel-plated or nylon**), **stainless steel**, or **aluminum bronze**. The stem, responsible for actuating the disc, is commonly made of **stainless steel 410/416/304/316**, while the seat can be **EPDM**, **BUNA-N**, **PTFE**, or **metal-seated** for high-temperature environments.

One of the primary advantages of **manual butterfly valves** is their **simple structure** and **lightweight design**, which facilitates easy installation and maintenance. As noted in the product documentation, "manual valves are particularly suited for applications requiring frequent adjustments or where electrical power is unavailable."

Technical Specifications and Standards

Manual butterfly valves are designed to meet stringent industry standards, ensuring compatibility and performance across diverse applications. Below is a detailed breakdown of their technical specifications:

These specifications highlight the versatility of **manual butterfly valves**, which can be tailored to meet the demands of high-pressure or corrosive environments. For instance, **stainless steel 304/316** bodies are ideal for chemical processing, while **ductile cast iron** is often used in water treatment systems due to its durability.

Applications and Use Cases

**Manual butterfly valves** are employed in a wide range of industries, including:

• Water and Wastewater Treatment: Their corrosion-resistant materials make them suitable for handling potable water and sewage.
• HVAC Systems: The lightweight design allows for easy integration into heating and cooling systems.
• Chemical Processing: Valves with **PTFE** or **metal-seated** seats are used to manage aggressive chemicals.
• Oil and Gas: High-pressure models (e.g., PN25) are used in pipelines and storage tanks.

According to the NIST, "standardized valve designs are critical for ensuring safety and efficiency in industrial systems." This is particularly relevant for **manual wafer butterfly valve DN150**, which is widely used in medium-sized pipelines.

Company Background: Ningjin Thriveon Valve Co., Ltd.

As a leading **manual butterfly valve manufacturer**, Ningjin Thriveon Valve Co., Ltd. has established itself as a trusted name in the industry. The company specializes in producing high-quality **hand operated butterfly valves** and **manual exhaust butterfly valves** that meet international standards. With a focus on innovation and customer satisfaction, Ningjin Thriveon ensures that its products are reliable, durable, and cost-effective.

For more information about their product range, visit the manual butterfly valve page or explore their company website.

Conclusion

**Manual butterfly valves** are indispensable components in modern industrial systems, offering a balance of simplicity, reliability, and cost-effectiveness. Their technical specifications, such as **stainless steel 304/316** construction and **PN10/16/25** pressure ratings, ensure they can withstand demanding environments. By adhering to global standards like **API 609** and **EN593**, manufacturers like Ningjin Thriveon Valve Co., Ltd. continue to drive innovation in valve technology.

For further details on **manual butterfly valve manufacturers** or specific product models like the **manual wafer butterfly valve DN150**, visit the official website.

References

NIST (National Institute of Standards and Technology). (n.d.). https://www.nist.gov. Retrieved from https://www.nist.gov.