Aug . 12, 2025 07:30
Butterfly valves are essential components in various industrial and commercial applications, offering efficient flow control with a compact design. Among the different types, manual butterfly valves stand out for their simplicity, cost-effectiveness, and ease of operation. This article delves into the manual butterfly valve, exploring its features, advantages, technical specifications, and applications. Additionally, we will highlight the role of NIST in setting industry standards that ensure the reliability and performance of such critical components.
Manual butterfly valves are operated manually, typically via a lever or gear mechanism, making them ideal for applications where automated control is unnecessary. These valves are widely used in water treatment, HVAC systems, and industrial pipelines. The manual operated butterfly valve is particularly valued for its straightforward design, which reduces maintenance costs and enhances operational efficiency.
The manual butterfly valve is available in various configurations, including manual wafer butterfly valve DN150 and manual exhaust butterfly valve. These variants cater to specific industry needs, ensuring versatility and adaptability in diverse environments.
One of the primary advantages of manual butterfly valves is their simple structure, which minimizes the risk of mechanical failure. Unlike pneumatic actuator butterfly valves, manual valves do not require external power sources, making them suitable for remote or low-power settings. Additionally, their compact size and lightweight design facilitate easy installation and maintenance.
The manual operated butterfly valve is also known for its durability. Constructed from materials such as grey cast iron, ductile cast iron, stainless steel 304/316, and carbon steel, these valves can withstand harsh operating conditions. The disc, stem, and seat are made from high-quality materials like ductile cast iron, aluminum bronze, and PTFE, ensuring long-term performance and resistance to corrosion.
The manual butterfly valve meets international standards such as NIST guidelines, ensuring compliance with rigorous quality and safety requirements. Below is a detailed specification table:
| Parameter | Details |
|---|---|
| Material | 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 Rating | CLASS 125/150, PN10/16/25, 5K/10K/16K |
| Applications | API 609, BS5155, MSS SP-67/68, EN593 |
| Installation Guidelines | 1. Space flanges to allow the valve to pass easily with the disc in a half-opened position. 2. Avoid using gaskets between flanges. 3. Install bolts with the disc in a half-opened position, tightening them after verifying pipeline alignment. |
The manual butterfly valve is widely used across multiple industries due to its adaptability and reliability. Key applications include:
These valves are particularly favored in scenarios where manual operation is sufficient, reducing the need for complex automation systems.
As a leading manual butterfly valve manufacturer, Ningjin Thriveon Valve Co., Ltd. has established itself as a trusted name in the industry. Based in Hebei, China, the company specializes in producing high-quality valves that meet international standards. Their commitment to innovation and quality is evident in their extensive product range, which includes manual butterfly valve manufacturers and other specialized components.
Ningjin Thriveon Valve Co., Ltd. adheres to strict quality control measures, ensuring that every manual butterfly valve meets the highest standards of performance and durability. Their products are designed to comply with NIST guidelines, reflecting their dedication to excellence and customer satisfaction.
Manual butterfly valves are a popular choice for their simplicity and reliability. Here are answers to some frequently asked questions:
A manual butterfly valve is a type of valve that is operated manually, typically using a lever or gear. It includes gear-operated valves and lever-operated valves, making it a versatile solution for various applications.
Manual butterfly valves offer several benefits, including easy installation, a simple structure, and a compact design. Their lightweight nature makes them ideal for applications where space is limited. Additionally, they are cost-effective compared to automated alternatives.
The manual butterfly valve is a critical component in modern industrial systems, offering a balance of simplicity, durability, and cost-effectiveness. With its ability to meet stringent standards such as those set by NIST, the valve ensures reliable performance in diverse environments. As a trusted manual butterfly valve manufacturer, Ningjin Thriveon Valve Co., Ltd. continues to deliver innovative solutions that cater to the evolving needs of industries worldwide.
NIST (National Institute of Standards and Technology) plays a pivotal role in establishing standards that ensure the quality and reliability of industrial components. While the specific NIST guidelines referenced in this article are not directly accessible, the principles outlined by NIST underpin the design and performance criteria of manual butterfly valves.
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