Manual Butterfly Valve - Ningjin Thriveon Valve | Simple, Affordable

Aug . 17, 2025 07:30

Introduction to Manual Butterfly Valves

Manual butterfly valves are essential components in fluid control systems, offering a reliable and cost-effective solution for regulating the flow of liquids and gases. Unlike automated systems, manual butterfly valves are operated by hand, making them ideal for applications where simplicity and ease of maintenance are critical. These valves are categorized into two primary types: lever-operated butterfly valves and gear-operated butterfly valves, both of which fall under the broader category of manual butterfly valve systems.

Manual Butterfly Valve - Ningjin Thriveon Valve | Simple, Affordable

Key Features and Advantages

Manual butterfly valves are renowned for their simple structure, lightweight design, and ease of installation. Their straightforward mechanism reduces the likelihood of mechanical failure, making them a preferred choice in environments where reliability is paramount. Below are some of the key advantages:

Cost-Effective: The absence of complex actuation systems (such as pneumatic or electric actuators) significantly lowers the initial investment and maintenance costs.
Compact Design: Manual butterfly valves occupy minimal space, making them suitable for applications with spatial constraints.
Quick Operation: With a 90-degree rotation, these valves can be opened or closed rapidly, ensuring efficient flow control.
Wide Material Compatibility: Available in materials like stainless steel 304/316, ductile cast iron, and carbon steel, they adapt to diverse environmental conditions and fluid types.

Technical Specifications

Manual butterfly valves adhere to stringent industry standards, ensuring consistency and performance across applications. The following table outlines the critical technical specifications:

Parameter	Details
Materials	Body: Grey 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 valve passage with the disc in a half-open position. Avoid gaskets between flanges. Install bolts with the disc in a half-open position, tightening nuts after alignment. Open the valve fully to verify pipeline alignment before tightening.

Applications Across Industries

Manual butterfly valves are versatile, serving a wide range of industries. Their ability to handle different media and pressures makes them indispensable in the following sectors:

Water Treatment: Used in municipal water supply systems and wastewater management for regulating flow and pressure.
HVAC Systems: Ideal for controlling air and coolant flow in heating, ventilation, and air conditioning systems.
Chemical Processing: Suitable for handling corrosive liquids and gases due to their corrosion-resistant materials.
Power Generation: Employed in cooling water systems and steam control applications.
Food and Beverage: Compliant with hygiene standards, these valves ensure safe handling of food-grade liquids.

For more details on manual butterfly valve manufacturers, visit Ningjin Thriveon Valve Co., Ltd.

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 global fluid control industry. With decades of experience, the company specializes in producing high-quality valves that meet international standards. Their commitment to innovation and customer satisfaction has enabled them to serve clients across diverse sectors, including energy, manufacturing, and infrastructure.

For a deeper understanding of the company's expertise, explore their official website.

Frequently Asked Questions (FAQ)

1. What is a Manual Butterfly Valve?

A manual butterfly valve is a type of valve operated by hand, typically using a lever or gear mechanism. It is commonly used in applications where automated systems are unnecessary, offering a simple and cost-effective solution. For more information, visit this page.

2. What are the Advantages of Manual Butterfly Valves?

Manual butterfly valves are easy to install, have a compact design, and require minimal maintenance. Their lightweight structure and simple operation make them ideal for applications with limited space or budget constraints.

3. What Materials Are Used in Manual Butterfly Valves?

These valves are constructed from materials such as stainless steel 304/316, ductile cast iron, and carbon steel, ensuring durability and compatibility with various fluids and environments.

Industry Standards and Compliance

Manual butterfly valves are designed to comply with global standards such as API 609, BS5155, and EN593. These standards ensure that the valves meet rigorous requirements for performance, safety, and reliability. According to the National Institute of Standards and Technology (NIST), adherence to such standards is critical for maintaining consistency and interoperability in industrial systems.

Reference: NIST.gov

Conclusion

Manual butterfly valves remain a cornerstone of fluid control systems, offering a balance of simplicity, durability, and cost-effectiveness. Whether in water treatment, HVAC, or chemical processing, these valves provide reliable performance across industries. With the expertise of companies like Ningjin Thriveon Valve Co., Ltd., the future of manual butterfly valves continues to evolve, driven by innovation and adherence to global standards.