Cast Iron Butterfly Valve

A rotary disk is employed by the butterfly valve to regulate the flow medium within a system. This thin disk remains within the passage, resulting in minimal resistance to the flow. Butterfly valves find application in various industries such as food and beverage, chemicals, industrial water treatment, high-rise constructions, and water supply and drainage. They are primarily utilized for opening, closing, or adjusting the flow of mediums in pipelines.

A centric butterfly valve is a vital component in controlling the flow of liquid or gas in a system. It utilizes a rotary disc to regulate the medium's flow, which stays in the passage but offers minimal resistance to the fluid. The two most common types of butterfly valves are the centric wafer butterfly valve and lug butterfly valve. These types of valves have a stem that runs through the center of the disc on the pipe bore middle line with the seat located in the body of the valve's inner diameter. This makes the centric butterfly valve known as a resilient-seated valve, relying on the rubber seat's flexibility to ensure the seal's reliability when the flow is shut. Due to their functionality, centric butterfly valves are commonly used in low-pressure applications.

1.Design and manufacture: API609, ANSI B16.34

2.Test and inspection: API598

For the dimensions of valve face to face, three standards are commonly used: API609, ANSI B16.10, and EN558-1. These standards provide guidelines for the measurements and distances required between the flanges of valves, ensuring consistency and compatibility between different systems. By adhering to these standards, engineers and manufacturers can ensure the safe and efficient operation of valves in a variety of applications.

When it comes to the installation between flanges, there are different standards that can be followed, such as ANSI B16.5, MSS SP 44, DIN2501, BS4504, JIS, and more. These standards provide guidelines for properly installing flanges to ensure a secure connection.
One commonly used standard is ANSI B16.5, which specifies the dimensions, tolerances, and materials for flanges. It provides a precise framework for flange installation, ensuring compatibility and interchangeability.
MSS SP 44 is another standard that outlines the requirements for steel pipeline flanges. It includes specifications for materials, dimensions, and pressure-temperature ratings, ensuring a reliable and safe installation.
DIN2501 is a German standard that defines the dimensions and pressure ratings of flanges. It provides guidelines for proper installation, allowing for a tight and leak-free connection.
BS4504 is a British standard for flanges. It covers a wide range of sizes and pressure ratings, ensuring flexibility in installation.
JIS (Japanese Industrial Standards) is a standard used in Japan, focusing on flanges for industrial applications. It includes specifications for dimensions, materials, and pressure ratings, allowing for consistent and reliable installations.
By following these standards, the installation between flanges can be done in a uniform and regulated manner, ensuring a proper fit and tight connection. This guarantees the integrity and safety of the flange installation, minimizing the risk of leaks or failures.

·Size: DN50 to DN1200

·Class: 125LB, 150LB, PN10, PN16

·Our product range includes cast iron and ductile iron wafer butterfly valve, lug butterfly valve, and double-flanged type butterfly valve. These valves are available in different configurations, such as concentric, double eccentric, or triple eccentric designs. Additionally, they come with an ISO5211 mounting pad for ease of installation.
To provide versatile sealing options, our valves are equipped with soft seats made from various elastomer materials. These include EPDM, NBR, BUNA-N, VITON, PTFE, and more. This ensures that our valves can cater to different operational requirements and provide excellent sealing performance in various applications.

We use a wide range of materials for our products including cast iron and ductile iron, carbon steel WCB, stainless steel CF8 and CF8M, as well as aluminum bronze. Our priority is to deliver high-quality products to our customers, and selecting the right materials is a crucial part of that process. With our expertise and experience, we are able to identify the most suitable materials for each individual project. We take pride in our ability to provide our customers with superior products that they can rely on.

·Please create a similar content using the provided information, but in a different order: gear, lever, electric and pneumatic actuator.

There are numerous benefits associated with butterfly valves when compared to other valve types. One notable advantage is their economical construction, which involves fewer components. This simplicity in design makes them incredibly user-friendly and easy to maintain. Additionally, butterfly valves feature a wafer design body, contributing to their lightweight nature. As a result, the expenses and installation costs associated with equipment, piping support, labor, and time can be minimized. Overall, butterfly valves offer a cost-effective and efficient solution for various applications.

Cast iron and ductile iron wafer butterfly valve

Dimensions (in mm & inch) and weights

Cast iron and ductile iron double flanged butterfly valve

Standard materials of parts

Dimension (mm) and Weights　　　　　　　　　　　　　　 　　

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