Dec . 13, 2024 05:58 Back to list

Dimensions of ANSI B16.5 Class 150 Slip-On Flanges Explained

Understanding ANSI B16.5 Class 150 Slip-On Flange Dimensions

In the world of piping systems, flanges play a crucial role in connecting different sections of a pipeline or attaching valves, pumps, and other equipment. Among the various types of flanges, the ANSI B16.5 Class 150 Slip-On Flange is one of the most widely used. This article delves into the specifications, dimensions, and applications of these flanges.

What is ANSI B16.5?

ANSI B16.5 is a standardized specification set by the American National Standards Institute (ANSI) that covers flat-faced and raised-faced flanges. It specifies the dimensions, tolerances, and marking requirements for various flange types used in piping systems. Class 150 flanges are designed for operation up to a specific pressure and temperature, making them suitable for a wide range of applications.

Characteristics of Slip-On Flanges

Slip-On Flanges are designed to slip over the pipe, allowing for easy alignment and welding. They typically have a raised face that provides a larger surface area for sealing, thereby enhancing the effectiveness of the connection. The slip-on design shortens the installation time and, as a result, is preferred in various industrial applications.

Dimensions of Class 150 Slip-On Flanges

The dimensions for ANSI B16.5 Class 150 Slip-On Flanges are specified in inches and vary based on the nominal pipe size (NPS). The primary dimensions include the outside diameter (OD), the inside diameter (ID), the flange thickness, bolt hole diameter, and the number of bolt holes, which are determined by the flange size.

For example, some common dimensions for Class 150 Slip-On Flanges based on their nominal pipe size include

ansi b16 5 class 150 slip on flange dimensions

- NPS 1/2 - OD 1.90 inches - ID 0.84 inches - Thickness 0.28 inches - Bolt Hole Diameter 0.56 inches - Number of Bolt Holes 4

- NPS 1 - OD 2.88 inches - ID 1.34 inches - Thickness 0.28 inches - Bolt Hole Diameter 0.56 inches - Number of Bolt Holes 4

- NPS 2 - OD 4.00 inches - ID 2.16 inches - Thickness 0.28 inches - Bolt Hole Diameter 0.62 inches - Number of Bolt Holes 4

As the nominal pipe size increases, the dimensions of the flanges also increase accordingly. It is essential to refer to detailed tables or charts for precise measurements.

Applications

Class 150 Slip-On Flanges are used across various industries, including oil and gas, water treatment, chemical processing, and power generation. Their simplicity, cost-effectiveness, and versatility make them ideal for low and medium-pressure applications. They are particularly useful in situations where frequent disassembly and reassembly of the piping system are necessary, due to their ease of installation.

Conclusion

In summary, ANSI B16.5 Class 150 Slip-On Flanges are an essential component of modern piping systems. Their standardized dimensions provide reliability and consistency across applications, while their design offers practical advantages in installation and maintenance. Understanding their dimensions and specifications is vital for engineers and contractors involved in the design and construction of piping systems. By choosing the correct flange type and size, one can ensure the efficiency and safety of fluid transport systems. Always consult the most current standards and guidelines when selecting flanges for specific applications to accommodate any updates in the specifications or manufacturing practices.

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