Manual Butterfly Valve-Ningjin Thriveon Valve Co., Ltd.|Simple Design&Cost-Effective

In the realm of fluid control systems, **manual butterfly valves** play a critical role in regulating the flow of liquids and gases. These valves are designed for simplicity, durability, and ease of use, making them a preferred choice in various industrial applications. This article delves into the **features, advantages, technical specifications, and real-world applications** of manual butterfly valves, while also exploring the expertise of **Ningjin Thriveon Valve Co., Ltd.**, a leading manufacturer in this field.

What is a Manual Butterfly Valve?

A **manual butterfly valve** is a type of quarter-turn valve that uses a disc to control the flow of media through a pipeline. Unlike **pneumatic** or **electric actuator butterfly valves**, manual valves are operated by hand, typically via a lever or gear mechanism. This design simplifies the structure, reduces maintenance costs, and ensures reliability in environments where automated systems may not be feasible.

According to the **FAQ section** on the product page, manual butterfly valves include **lever-operated** and **gear-operated** variants. These valves are ideal for applications requiring **manual intervention** or **low-cost solutions**. For more details, visit the [Gear-Operated Butterfly Valve](https://www.thriveonvalve.com/products/gear-operated-butterfly-valve/) page.

Key Features and Advantages

Manual butterfly valves are celebrated for their **compact design**, **lightweight construction**, and **ease of installation**. Below are some of their standout features:

• Simple Structure: The absence of complex actuators or electrical components ensures a straightforward design, reducing the risk of mechanical failure.
• Cost-Effective: Manual valves are often more affordable than their automated counterparts, making them a budget-friendly option for many industries.
• Quick Operation: With a 90-degree rotation, these valves can be opened or closed rapidly, minimizing downtime during maintenance or emergency situations.
• Wide Material Compatibility: Available in a range of materials, including **gray cast iron**, **ductile cast iron**, **stainless steel**, and **aluminum bronze**, these valves suit diverse operating conditions.

Technical Specifications

Parameter	Details
Materials	Body: Gray Cast Iron, Ductile Cast Iron, Stainless Steel 304/316, Carbon Steel Disc: Ductile Cast Iron (Nickel-plated/Nylon coated), Stainless Steel 304/316, Aluminum Bronze Stem: Stainless Steel 410/416/304/316 Seat: EPDM, BUNA-N, PTFE, Viton, Hypalon, Neoprene, Metal Seated
Pressure Ratings	CLASS 125/150, PN10/16/25, 5K/10K/16K
Standards Compliance	API 609, BS5155, MSS SP-67/68, EN593
Installation Guidelines	Space flanges to allow the valve to pass easily. Keep the disc in a half-open position. Avoid using gaskets between flanges. Insert bolts with the disc in a half-open position and tighten nuts after verifying alignment.

Applications Across Industries

Manual butterfly valves are versatile and find applications in numerous sectors, including:

• Water Treatment: Used to regulate water flow in municipal and industrial systems.
• HVAC Systems: Ideal for controlling air or coolant flow in heating and cooling systems.
• Chemical Processing: Suitable for handling corrosive media due to the availability of stainless steel and PTFE-lined options.
• Oil and Gas: Employed in pipelines for crude oil, natural gas, and other hydrocarbons.

Why Choose Manual Butterfly Valves?

Compared to **pneumatic** or **electric actuator butterfly valves**, manual valves offer several advantages:

• Lower Maintenance: With fewer moving parts, manual valves require less frequent servicing.
• Energy Efficiency: No need for external power sources, reducing energy consumption.
• Reliability in Harsh Environments: Their robust construction ensures performance in extreme temperatures and pressures.

Company Background: Ningjin Thriveon Valve Co., Ltd.

As a leading manufacturer of **manual butterfly valves**, **Ningjin Thriveon Valve Co., Ltd.** (Hebei Yingda Metal Pipe Industry Co., Ltd.) has established itself as a trusted name in the industry. The company specializes in producing high-quality valves that meet international standards, ensuring **durability, precision, and safety** for its clients.

For more information about the company’s offerings, visit the [Ningjin Thriveon Valve Co., Ltd.](https://www.thriveonvalve.com/) website.

Standards and Certifications

Manual butterfly valves are designed to comply with critical industry standards, ensuring **safety and performance**. These include:

• API 609: Specifies requirements for butterfly valves in petroleum and chemical industries.
• EN 593: Defines performance and dimensional requirements for industrial valves.
• MSS SP-67/68: Covers flanged and wafer-type butterfly valves.

Installation and Maintenance Tips

Proper installation is crucial for the optimal performance of manual butterfly valves. Follow these steps:

1. Ensure flanges are spaced to allow the valve to pass easily, keeping the disc in a half-open position.
2. Avoid placing gaskets between flanges to prevent misalignment.
3. Insert bolts with the disc in a half-open position, and tighten nuts after confirming pipeline alignment.

Regular maintenance, such as checking for leaks and lubricating moving parts, ensures longevity and efficiency.

Comparing Manual and Automated Butterfly Valves

While **manual butterfly valves** are cost-effective and easy to operate, **automated valves** offer **remote control** and **integration with smart systems**. The choice between the two depends on factors like **operational requirements**, **budget constraints**, and **environmental conditions**.

Conclusion

Manual butterfly valves remain a cornerstone of fluid control systems due to their **simplicity, reliability, and versatility**. Whether in water treatment, HVAC, or chemical processing, these valves provide a robust solution for flow regulation. With manufacturers like **Ningjin Thriveon Valve Co., Ltd.** leading the way, the industry continues to evolve, offering **high-quality products** that meet global standards.

References

[1] National Institute of Standards and Technology (NIST). https://www.nist.gov/