Easy Alignment Cost Effective Loose flange ASMEB16.5 Class150

Easy Alignment Cost Effective Loose flange ASMEB16.5 Class150

1.Product Description

A Loose Flange, also known as a lap joint flange or loose flange, is not fixed directly to the pipe but is instead loose and slides over the pipe . It typically partners with a stub end (a welded collar or a lap ring), which is first welded or otherwise attached to the pipe. The loose flange then bolts this assembly to a mating flange, but it does not take the pressure load itself; its primary role is to facilitate connection and alignment .

This design offers several key advantages:

• Material Savings: The flange itself can be made from a different, often less expensive material (like carbon steel) than the stub end, which can be a costly corrosion-resistant alloy like stainless steel, copper, or aluminum .

• Ease of Alignment: Since the flange can rotate freely around the pipe, it is much easier to align bolt holes during installation, especially in tight spaces or with large-diameter pipes .

• Ease of Maintenance and Inspection: It is well-suited for systems that require frequent disassembly for cleaning, inspection, or maintenance .

• Suitability for Corrosive Media: By using a stub end made of corrosion-resistant material, the flange is ideal for pipelines carrying corrosive fluids .

2.Key Product Parameters

The design and manufacturing of loose flanges are governed by various international and national standards. Key parameters include:

3.Product Applications

Loose flanges are versatile components used across numerous industries, particularly where ease of assembly, maintenance, or corrosion resistance is important:

 Corrosive Media Pipelines: They are highly suitable for transporting corrosive substances . The stub end in contact with the fluid can be made from corrosion-resistant materials like stainless steel, copper, or aluminum, while the flange itself can be made from carbon steel, offering a cost-effective solution .

Systems Requiring Frequent Disassembly: Ideal for pipelines and equipment that need regular inspection, cleaning, or maintenance, such as in food processing, pharmaceuticals, and chemical plants . Their rotatable design makes bolt alignment during re-assembly straightforward .

Non-Weldable Pipes: Used with pipes made of materials that are difficult to weld, such as plastic pipes or glass reinforced plastic (GRP) pipes, where the stub end provides a reliable connection point .

•  Broad Industrial Use: They are widely applied in:

  • Shipbuilding: Used in various shipboard systems .

  • Petrochemical and Oil Refining: For various process and utility lines .

  • Power Generation: In systems requiring isolation for maintenance .

  • Water Treatment and Public Utilities: For water supply and wastewater management .

  • Construction, HVAC, and Plumbing: For water, heating, and ventilation systems .

I hope this structured overview helps you understand loose flanges better. Should you have more specific questions regarding a particular standard, material, or application scenario, feel free to ask.

Loose flange