Couplings and Adaptors for Gas Networks

An introduction to couplings and adaptors for gas pipelines and networks. Everything you need to know such as what they are, how they work, where they are used, different types and much more.

What are Gas Couplings and Adaptors?

Couplings and adaptors are essential components in gas distribution networks, facilitating the secure connection of pipes, whether of similar or differing materials and sizes. Couplings typically join two pipes of the same diameter, ensuring a continuous and leak-free flow of gas. Adaptors, on the other hand, enable connections between pipes of varying diameters or differing materials, ensuring compatibility and system integrity. These fittings are crucial in maintaining the safety, reliability, and efficiency of gas supply systems.

How Do Couplings and Adaptors Work?

Gas couplings and adaptors function by creating a strong, sealed connection between pipe ends. They feature robust gaskets made from materials such as NBR (nitrile butadiene rubber), which ensures a tight and leak-proof seal suited for gas applications. Some couplings accommodate angular deflection, allowing for slight misalignment between pipes while maintaining a secure connection. Adaptors enable compatibility between different pipe sizes or materials, ensuring seamless integration into gas networks.

Where Are Gas Couplings and Adaptors Used?

Gas couplings and adaptors are utilised across various applications, including:

Gas Distribution Networks: Ensuring secure connections in gas pipelines.
Industrial Gas Systems: Facilitating the transport of gases in manufacturing processes.
Residential and Commercial Gas Installations: Connecting pipes in buildings' gas supply systems.

Key Features & Benefits

Versatility: Suitable for connecting various pipe materials, including cast iron, ductile iron, steel, uPVC, asbestos cement and polyethylene.
Angular Deflection: Allows for up to ±4° angular deflection, accommodating minor misalignments.
Corrosion Resistance: High-quality epoxy coatings and corrosion-resistant bolts and nuts ensure durability.
Ease of Installation: Anti-friction coated bolts and nuts facilitate straightforward mounting.

Gas Coupling and Adaptor Types & Materials

AVK offers a comprehensive range of gas couplings and adaptors to suit various applications:

Universal Straight Couplings: Designed for pipes of the same diameter, providing a seamless connection.
Step Couplings: Enable the joining of pipes with different diameters, ensuring a smooth transition.
Flange Adaptors: Allow for the connection between plain-ended pipes and flanged components, facilitating integration with valves and other equipment.
Materials: Typically constructed from ductile iron or steel with epoxy coatings for enhanced corrosion resistance. Gaskets are commonly made from NBR, known for its durability and sealing properties.

Choosing the Right Gas Coupling or Adaptor

When selecting a gas coupling or adaptor, consider the following criteria:

Pipe Material Compatibility: Ensure the fitting is suitable for the materials of the pipes being connected.
Size and Diameter: Verify that the fitting matches the nominal diameters of the pipes.
Pressure Rating: Choose fittings that can withstand the operating pressure of the system.
Environmental Conditions: Consider factors such as temperature range and exposure to corrosive elements.
Regulatory Compliance: Ensure the fittings meet relevant industry standards and certifications.

Why Choose AVK UK?

AVK UK is a leading manufacturer of high-quality fittings, with a longstanding reputation for excellence in the gas industry. Our products are engineered for reliability, safety, and performance, ensuring they meet the rigorous demands of modern gas distribution systems. With comprehensive customer support and a commitment to innovation, AVK UK is your trusted partner for gas pipeline solutions.

Gas Couplings and Adaptors Training and Factory Tours

The AVK couplings and adaptors are made at AVK Syddal in Hyde, near Manchester and we welcome visitors to come along to the facility for training which can also include valves if required. You will have a factory tour to see how they are made and 'get hands on'. Contact our gas expert, Jon Briafield, directly on the link below to arrange your visit. Alternatively we can come you: We can either drive our mobile roadshow van to your site, do group workshop sessions, lunch & learns or even via teams - contact Jon to arrange your training requirements.

Explore Our Gas Couplings and Adaptors Range

Discover the full range of AVK UK's gas couplings and adaptors. Whether you require fittings for standard pipeline connections or specialised applications, our products are designed to meet your needs. For expert technical advice contact Jon or, to for a quotation or submit an enquiry, contact our sales team on the contact links below:-