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Sep . 15, 2025 11:50 Back to list

Long Neck Wafer Type Model 25 Butterfly Valve-Ningjin County Hongda Valve Co., Ltd.|Precision Fluid Control, Durable Design



The Long Neck Wafer Type Model 25 Butterfly Valve is a critical component in modern fluid control systems, designed to offer precision, durability, and adaptability across diverse industrial applications. Manufactured by Ningjin County Hongda Valve Co., Ltd., this valve exemplifies the intersection of engineering excellence and practical utility. This article delves into its features, technical specifications, applications, and the company's background, while incorporating authoritative references to ensure credibility.

Product Overview

The Long Neck Wafer Type Model 25 Butterfly Valve is a specialized valve designed for use in piping systems where space constraints and operational efficiency are paramount. Its wafer-type design allows for compact installation, while the "long neck" feature enhances accessibility for maintenance and inspection. This valve is available in sizes ranging from 1" to 12", catering to both small-scale and large-scale industrial needs.

Key variants include the wafer type Model 15 and Model 25, as well as the lug type Model 20 and Model 30, providing flexibility for different installation requirements. The valve's robust construction and versatile material options make it suitable for a wide array of environments, from chemical processing to water treatment.

Long Neck Wafer Type Model 25 Butterfly Valve-Ningjin County Hongda Valve Co., Ltd.|Precision Fluid Control, Durable Design

Figure 1: Stainless Steel Flanged Butterfly Valve - A key variant of the Long Neck Wafer Type Model 25.

Long Neck Wafer Type Model 25 Butterfly Valve-Ningjin County Hongda Valve Co., Ltd.|Precision Fluid Control, Durable Design

Figure 2: SS Body Butterfly Valve - Highlighting the stainless steel construction for corrosion resistance.

Technical Specifications

The Long Neck Wafer Type Model 25 Butterfly Valve is engineered to meet rigorous industry standards, ensuring reliability and performance. Below is a detailed specification table:

Size (Inch) Dimensions (Inch) Dimensions (MM)
2" A: 27/8, B: 55/8, C: 11/4, D: 1/2, E: 41/8, H: 4, J: 31/4, K: 7/16, L: 121/32, T: 11/4, S: 5/8, W: 3/8 A: 73, B: 143, C: 32, D: 12.7, E: 104.8, H: 101.6, J: 82.6, K: 11.1, L: 42, T: 32, S: 15.9, W: 9.5
2.5" A: 37/64, B: 61/8, C: 11/4, D: 1/2, E: 4 7/8, H: 4, J: 31/4, K: 7/16, L: 13/4, T: 155/64, S: 5/8, W: 3/8 A: 79, B: 156, C: 32, D: 12.7, E: 123.9, H: 101.6, J: 82.6, K: 11.1, L: 45, T: 47, S: 15.9, W: 9.5
3" A: 311/32, B: 63/8, C: 11/4, D: 1/2, E: 53/8, H: 4, J: 31/4, K: 7/16, L: 125/32, T: 29/16, S: 5/8, W: 3/8 A: 85, B: 162, C: 32, D: 12.7, E: 136.5, H: 101.6, J: 82.6, K: 11.1, L: 45, T: 65, S: 15.9, W: 9.5

Material Composition and Construction

The Long Neck Wafer Type Model 25 Butterfly Valve is constructed using high-quality materials to ensure durability and resistance to harsh environments. Key components include:

  • Body: Cast Iron (ASTM A126 CL.B), Ductile Cast Iron (ASTM A536 65-45-12)
  • Upper Stem: Zinc-Plated Steel, Stainless Steel (ASTM A276 Types 316, 410, 420; ASTM A582 Type 416)
  • Seat: NBR, EPDM, Neoprene, PTFE, Viton
  • Disc: Ductile Cast Iron (Nickel Plated or Nylon Coated), Stainless Steel (ASTM A351 CF8, CF8M; EN 1.4408, 1.4469, 1.4501), AL-Bronze (ASTM B148 C95400)
  • O-Ring: NBR, EPDM, Neoprene, Viton
  • Bushing: PTFE, Nylon, Lubricated Bronze

The use of stainless steel and corrosion-resistant materials ensures the valve's longevity, even in aggressive chemical environments. This construction aligns with the standards set by organizations like the National Institute of Standards and Technology (NIST), which emphasizes precision and reliability in industrial components.

Key Features and Advantages

The Long Neck Wafer Type Model 25 Butterfly Valve offers several advantages that make it a preferred choice in various industries:

  • Compact Design: The wafer-type structure minimizes space requirements, making it ideal for installations with limited room.
  • Easy Maintenance: The long neck design provides better access for inspection and maintenance, reducing downtime.
  • Corrosion Resistance: Stainless steel and other durable materials ensure resistance to wear and tear in harsh environments.
  • Wide Size Range: Available in sizes from 1" to 12", this valve accommodates both small and large-scale applications.
  • Customizable Options: The availability of multiple materials and configurations allows for tailored solutions to specific industry needs.

Applications and Industries

This valve is widely used in industries where precise fluid control is critical. Some common applications include:

  • Water Treatment: For regulating flow in municipal and industrial water systems.
  • Chemical Processing: Handling corrosive and hazardous substances with reliability.
  • Oil and Gas: Managing fluid flow in pipelines and storage tanks.
  • Power Generation: Controlling cooling water and other critical processes.
  • Food and Beverage: Ensuring hygiene and compliance with industry standards.

The versatility of the Long Neck Wafer Type Model 25 Butterfly Valve makes it a valuable asset across these sectors, as highlighted by the NIST in its role of advancing industrial standards.

Company Background: Ningjin County Hongda Valve Co., Ltd.

Founded in China, Ningjin County Hongda Valve Co., Ltd. has established itself as a leading manufacturer of high-quality valves. The company's commitment to innovation and customer satisfaction is evident in its product range, which includes various types of butterfly valves, check valves, and more. With a focus on precision engineering and adherence to international standards, the company serves a global clientele.

For more information about the company, visit their official website or contact them directly via email at njhdvlz@163.com.

Conclusion

The Long Neck Wafer Type Model 25 Butterfly Valve stands out as a reliable and versatile solution for fluid control needs. Its robust design, customizable options, and wide range of applications make it an essential component in modern industrial systems. By leveraging the expertise of Ningjin County Hongda Valve Co., Ltd. and adhering to standards upheld by institutions like the National Institute of Standards and Technology (NIST), this valve ensures optimal performance and longevity.

References

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


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