What is ASME B16.47 Series A blind flange?

ASME B16.47 Series A blind flange is a type of flange used in various piping systems to close or seal the end of a pipeline, valve, or pressure vessel. It is designed according to the ASME B16.47 standard, specifically Series A, which defines dimensions, tolerances, and material requirements for large-diameter flanges ranging from 26 inches to 60 inches.

Characteristics of ASME B16.47 Series A Blind Flange:

Large Diameter Range: The ASME B16.47 Series A standard covers blind flanges ranging from 26 inches to 60 inches in diameter, making it suitable for large-scale industrial applications.

Thicker and Heavier: Compared to Series B flanges, Series A blind flanges are generally thicker and heavier, providing higher strength and greater resistance to stress and pressure.

Raised Face (RF) and Flat Face (FF): These flanges come in two face types—raised face (RF) and flat face (FF). The raised face type is more common as it allows for better sealing, especially under high pressure.

Bolt Holes: The Series A flange features a standard bolt hole pattern, allowing it to fit easily with the corresponding pipe and providing a secure connection.

High-Pressure Ratings: ASME B16.47 Series A blind flanges are designed to withstand high pressure, making them suitable for various industries, such as oil and gas, petrochemical, and power generation.

Material Options

ASME B16.47 Series A blind flanges are available in a range of materials to suit different applications and environments:

Carbon Steel: Commonly used due to its strength and durability; carbon steel flanges are suitable for high-pressure and high-temperature environments.

Stainless Steel: Provides corrosion resistance and is suitable for environments where exposure to moisture or chemicals is a concern.

Alloy Steel: Ideal for applications requiring higher strength and resistance to extreme temperatures and pressures.

Advantages of Using ASME B16.47 Series A Blind Flanges

High-Pressure Capability: Designed to handle extreme pressure conditions, making them ideal for critical systems in oil, gas, and chemical industries.

Versatile Design: Compatible with large-diameter pipes and various materials, offering flexibility in different industrial applications.

Ease of Installation and Maintenance: These flanges are easy to install, and their robust design ensures that they can be maintained efficiently, minimizing downtime.

ASME B16.47 Series A Blind Flanges are essential components in large-diameter piping systems, providing a reliable and durable solution for sealing off pipe ends and isolating sections for maintenance. Their design, adhering to ASME standards, ensures safety and efficiency across a variety of high-pressure applications.