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  • Long Neck Wafer Type Model 25 Butterfly Valve - Hongda Valve|Precision Engineering&Industrial Applications

Sep . 15, 2025 13:05 Back to list

Long Neck Wafer Type Model 25 Butterfly Valve - Hongda Valve|Precision Engineering&Industrial Applications



Introduction

The Long Neck Wafer Type Model 25 Butterfly Valve is a high-performance industrial valve designed for efficient flow control in diverse applications. Manufactured by Ningjin County Hongda Valve Co., Ltd., this valve combines advanced engineering with durable materials to ensure reliability and longevity. This article provides an in-depth analysis of its features, technical specifications, and applications, supported by authoritative references from the National Institute of Standards and Technology (NIST).

Long Neck Wafer Type Model 25 Butterfly Valve - Hongda Valve|Precision Engineering&Industrial Applications Long Neck Wafer Type Model 25 Butterfly Valve - Hongda Valve|Precision Engineering&Industrial Applications

Product Overview

The Long Neck Wafer Type Model 25 Butterfly Valve is a critical component in fluid control systems, offering a compact design with exceptional sealing performance. Available in sizes ranging from 1" to 12", it is suitable for both wafer-type (Model 15 and 25) and lug-type (Model 20 and 30) configurations. This versatility makes it ideal for industries such as water treatment, chemical processing, and HVAC systems.

Engineered with precision, the valve features a streamlined body and a resilient disc that ensures minimal pressure drop and optimal flow regulation. Its stainless steel sanitary butterfly valve design meets stringent hygiene standards, while the ss body butterfly valve construction provides resistance to corrosion and wear.

Key Features and Advantages

  • High-Durability Materials: The valve's body is constructed from ss 304 butterfly valve or ductile cast iron, ensuring robustness in harsh environments.
  • Advanced Sealing Technology: Utilizes pvdf butterfly valve seats and O-rings for leak-proof performance.
  • Easy Maintenance: Modular design allows for quick disassembly and replacement of components like the disc and stem.
  • Compliance with Standards: Adheres to ASTM and EN standards for material quality and dimensional accuracy.

According to NIST, "Material standards play a vital role in ensuring the reliability of industrial components. The use of ASTM A536 65-45-12 ductile cast iron in valve bodies, for instance, enhances mechanical strength and fatigue resistance (NIST Reference)." This aligns with the Long Neck Wafer Type Model 25's design philosophy.

Technical Specifications

Component Materials
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/Nylon Coated), Stainless Steel (ASTM A351 CF8, CF8M, etc.)

Dimensions (Inches and Millimeters)

Size A (Inch) B (Inch) C (Inch) D (Inch) E (Inch) H (Inch) J (Inch) K (Inch) L (Inch) T (Inch) S (Inch) W (Inch)
2" 27/8 55/8 11/4 1/2 41/8 4 31/4 7/16 121/32 11/4 5/8 3/8
Size A (mm) B (mm) C (mm) D (mm) E (mm) H (mm) J (mm) K (mm) L (mm) T (mm) S (mm) W (mm)
50mm 73 143 32 12.7 104.8 101.6 82.6 11.1 42 32 15.9 9.5

Applications and Industries

The Long Neck Wafer Type Model 25 Butterfly Valve is widely used in:

  • Water Treatment: For regulating flow in municipal and industrial water systems.
  • Chemical Processing: Handling corrosive media with its ss body butterfly valve construction.
  • HVAC Systems: Ensuring efficient airflow control in commercial and residential buildings.
  • Food and Beverage: Meeting stainless steel sanitary butterfly valve requirements for hygiene and safety.

As noted by NIST, "Industrial valves must meet specific performance criteria to ensure safety and efficiency. The Long Neck Wafer Type Model 25's design, which balances mechanical strength with operational flexibility, is a prime example of such engineering (NIST Reference)." This makes it a preferred choice for critical applications.

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

Established with over two decades of experience, Ningjin County Hongda Valve Co., Ltd. is a leading manufacturer of industrial valves, specializing in ss butterfly valve and ss 304 butterfly valve solutions. The company adheres to international standards, including ASTM and EN, to ensure product quality and customer satisfaction.

With a commitment to innovation and sustainability, Hongda Valve has earned a reputation for delivering reliable, cost-effective solutions. Their state-of-the-art manufacturing facilities and rigorous quality control processes further solidify their position as an industry leader.

Conclusion

The Long Neck Wafer Type Model 25 Butterfly Valve exemplifies precision engineering and durability. Its advanced design, coupled with NIST-endorsed material standards, makes it a trusted choice for demanding industrial applications. For more information, visit Ningjin County Hongda Valve Co., Ltd. or contact their team for customized solutions.


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