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The AS 2129 Blank (BLFF) flange is a solid, circular plate flange used to seal the ends of pipelines, valves, or pressure vessels. Designed to meet Australian Standard AS 2129, it is suitable for a variety of pressure ratings and applications. The blank flange, also known as a blind flange, is ideal for isolating sections of piping during maintenance or testing.
Material Specifications:
AS 2129 Blank flanges are manufactured from a range of materials to accommodate diverse operational requirements:
- Carbon Steel: ASTM A105, Grade 250
- Stainless Steel: 304, 316, 316L
- Mild Steel: Common for general-purpose applications
- Alloy Steel: For systems requiring high strength and temperature resistance
- Coating Options: Galvanized or painted finishes for added corrosion protection
Material selection depends on system pressure, temperature, and the type of fluid being transported.
Key Features:
- Sealing Capability: Ensures complete isolation of a pipeline or vessel.
- Versatile Design: Suitable for a wide range of applications and pressure ratings.
- Corrosion Resistance: Options available for use in harsh or corrosive environments.
- Customizable: Can be supplied with various surface finishes and dimensions.
- Standards Compliance: Manufactured per AS 2129 for precise dimensions and reliable performance.
Applications:
- Water and Wastewater: Sealing pipelines during repair or expansion.
- Oil & Gas: Temporary or permanent isolation of pipelines in refineries and terminals.
- Chemical Processing: Blocking flow in corrosive or hazardous chemical pipelines.
- Power Generation: Used in steam, cooling water, and process fluid systems.
- Marine and Offshore: Isolating pipeline sections in harsh marine environments.
Pressure Ratings (Common Table Selections):
- Table D: Low-pressure applications
- Table E: Medium-pressure systems
- Table F and Higher: High-pressure operations
