Exploring JIS B2220 Flanges: Unveiling SOP, SOH, and BL Types

Introduction:

JIS B2220 flanges play a crucial role in various industrial applications, providing a reliable means of connecting pipes, valves, and other equipment. This Japanese Industrial Standard (JIS) defines the specifications for flanges used in piping systems, ensuring compatibility and adherence to quality standards. In this article, we will delve into three prominent types of JIS B2220 flanges — SOP, SOH, and BL — each serving distinct purposes in different engineering scenarios.

1. SOP Type Flange:

The SOP (Slip-On Plate) type flange is a widely used component in piping systems. Recognizable by its slip-on design, this flange allows for easy installation and removal. The SOP flange is characterized by a raised face, where the sealing surface is positioned slightly above the bolting circle. This design facilitates alignment during installation and ensures a secure connection between the flange and the adjoining equipment.

· Key features of SOP Type Flange:

- Slip-on design for easy installation.

- Raised face for improved alignment.

- Suitable for low-pressure applications.

- Commonly used in industries such as water supply, plumbing, and general-purpose piping.

2. SOH Type Flange:

The SOH (Slip-On Hub) type flanges are designed to accommodate higher pressure and temperature conditions compared to SOP flanges. The distinguishing feature of the SOH flange is the extended hub, providing additional strength and support. This design enhances the overall stability of the flange, making it suitable for applications where increased durability and performance are essential.

· Key features of SOH Type Flange:

- Slip-on design with an extended hub for added strength.

- Suitable for higher pressure and temperature applications.

- Commonly used in industries such as petrochemical, oil and gas, and power generation.

- Enhanced stability and durability.

3. BL Type Flange:

The BL (Blind) type flange serves a different purpose in piping systems compared to slip-on flanges. Instead of connecting two pipes, a BL flange is used to close the end of a pipe or valve. This type of flange is particularly useful when periodic access to the piping system is required for maintenance or inspection, as it can be easily removed and reinstalled.

· Key features of BL Type Flange:

- Designed for closing the end of a pipe or valve.

- Provides a solid barrier, preventing the flow of fluid or gas.

- Suitable for applications where periodic access is necessary.

- Widely used in industries such as chemical processing, pharmaceuticals, and refineries.

Conclusion:

JIS B2220 flanges, with their SOP type flange, SOH type flange, and BL type flange, offer versatile solutions for diverse piping system requirements. Whether it’s ease of installation, high-pressure applications, or closing off pipelines, these flanges contribute to the efficiency and reliability of industrial processes. Understanding the specific characteristics and applications of each type is crucial for selecting the right flange for a given engineering scenario, ensuring optimal performance and longevity in various industries.