Manual Butterfly Valve - Ningjin Thriveon Valve Co., Ltd. | Features, Applications, Technical Specs

Butterfly valves are essential components in fluid control systems, offering efficient regulation of flow in various industrial and commercial applications. Among the different types of butterfly valves, the manual butterfly valve stands out for its simplicity, reliability, and cost-effectiveness. This article provides a comprehensive analysis of manual butterfly valves, including their functionality, technical specifications, applications, and the company behind the product, Ningjin Thriveon Valve Co., Ltd.

Understanding Manual Butterfly Valves

A manual butterfly valve is a type of quarter-turn valve that uses a disc to control the flow of fluids. Unlike automated valves, which rely on actuators such as pneumatic or electric systems, manual valves are operated by hand. This design simplifies the structure, making them ideal for applications where frequent adjustments are not required. The two primary manual operation methods are lever-operated and gear-operated systems, both of which are highlighted in the product's context.

Key Features of Manual Butterfly Valves

• Simple Structure: Manual butterfly valves have a straightforward design, reducing the likelihood of mechanical failures.
• Lightweight and Compact: Their compact size makes them easy to install and transport, especially in space-constrained environments.
• Cost-Effective: The absence of complex actuation systems lowers the overall cost compared to automated alternatives.
• Easy Maintenance: With fewer components, manual valves require minimal maintenance and are straightforward to repair.

Technical Specifications and Material Compatibility

The technical specifications of manual butterfly valves are critical to their performance and suitability for different applications. The following table summarizes the key parameters:

Parameter	Details
Materials	Body: Grey Cast Iron, Ductile Cast Iron, Stainless Steel 304/316, Carbon Steel Disc: Ductile Cast Iron (Nickel-plated or 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

The materials used in manual butterfly valves are chosen for their durability and resistance to corrosion, ensuring long-term performance in diverse environments. For example, stainless steel and aluminum bronze are often used in corrosive or high-temperature applications, while EPDM and PTFE seats provide excellent sealing properties.

Applications of Manual Butterfly Valves

Manual butterfly valves are widely used across industries due to their versatility and reliability. Key applications include:

• Water Treatment: Regulating flow in municipal water supply systems and wastewater treatment plants.
• HVAC Systems: Controlling air and coolant flow in heating, ventilation, and air conditioning systems.
• Chemical Processing: Managing the flow of chemicals and other hazardous substances in industrial settings.
• Oil and Gas: Controlling fluid flow in pipelines and storage tanks.
• Power Generation: Monitoring and regulating water and steam flow in power plants.

For more details on specific applications, visit the product page.

Installation and Maintenance Guidelines

Proper installation is crucial to ensuring the optimal performance of manual butterfly valves. The following steps outline the standard procedure:

1. Flange Preparation: Ensure the flanges are spaced to allow the valve to pass easily, with the disc in a half-opened position.
2. Gasket Installation: Avoid fitting gaskets between the flanges to prevent misalignment.
3. Bolt Installation: Insert all bolts with the disc in a half-opened position, but do not tighten the nuts immediately.
4. Final Adjustment: Open the valve completely to verify the pipeline alignment, then tighten the nuts securely.

Regular maintenance, such as lubricating the stem and checking for leaks, is recommended to prolong the valve's lifespan. For detailed installation instructions, refer to the installation guide.

Frequently Asked Questions (FAQs)

1. What is a Manual Butterfly Valve?

A manual butterfly valve is a type of quarter-turn valve operated by hand, typically using a lever or gear mechanism. It is ideal for applications where automated control is not required. For more information, visit the product page.

2. What Are the Advantages of Manual Butterfly Valves?

Manual butterfly valves offer a simple structure, compact design, lightweight, and ease of installation. They are also cost-effective compared to automated alternatives. Learn more about their benefits here.

About Ningjin Thriveon Valve Co., Ltd.

Ningjin Thriveon Valve Co., Ltd. is a leading manufacturer of industrial valves, specializing in the production of manual butterfly valves and other fluid control solutions. With a focus on quality and innovation, the company serves clients across various industries, ensuring reliable and efficient valve performance. For more information about the company, visit the company page.

Industry Standards and NIST Reference

The design and manufacturing of manual butterfly valves adhere to international standards such as API 609 and EN593, which ensure consistency and safety in fluid control systems. The National Institute of Standards and Technology (NIST) plays a pivotal role in establishing these standards, as highlighted in their official website. NIST's research and development efforts contribute to the advancement of measurement science, which is critical for the accuracy and reliability of industrial components like butterfly valves.

Reference

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