Lug Couplings

Lug couplings are quick-connect hose fittings that use
interlocking lugs or claws to create a tight, vibration-resistant seal. Often referred to as claw couplings or universal couplings, they’re designed for rapid connection and disconnection of hose assemblies in compressed air, water transfer, and other industrial systems.

They are ideal for applications where tool-free assembly is essential, offering both speed and security in field or on-site conditions. Lug couplings are a staple across many quick connect systems, particularly those
subject to movement, vibration, or frequent connection changes.

Integraflex supplies a wide selection of lug and flanged
couplings made from high-quality materials such as polypropylene, aluminium, malleable iron, and stainless steel, allowing you to choose the best fit for your specific environment and media.

Our range includes several types of lug couplings
and related fittings designed to meet the needs of diverse systems and industries:

Fixed Lug Adaptors
These fittings allow a secure connection between your lug coupling system and fixed equipment such as pumps or pipework. They provide a stable mounting point for hoses and are ideal for installations where movement is limited. We offer fixed lug adaptors in both male to male and female to male configurations.

Blanking Caps
Used to seal off the end of a lug-coupled hose or line when not in use, blanking caps help prevent contamination, leakage, and system backflow. They are quick to apply and remove, making them ideal for temporary shutdowns or cleaning.

Blanking Plugs
Blanking plugs are inserted into the female part of a lug coupling to cap it off completely. Like blanking caps, blanking plugs help preserve system integrity and cleanliness when sections are not active.

All of these products are available in a choice of materials to suit your application:

Polypropylene – Lightweight, corrosion-resistant, and ideal for low-pressure applications and chemical compatibility

Aluminium – Strong and lightweight; suitable for water and air systems

Iron (Malleable or Galvanised) – Excellent for rugged construction or industrial use

Stainless Steel – Highly durable and resistant to corrosion, ideal for food-grade or harsh environments

These industrial fittings are available in multiple sizes
and configurations, offering full compatibility with your existing hose connection systems.

Lug couplings are widely used across industrial sectors for fast, secure, and efficient hose connections. Common applications include:

• Construction and Demolition – Connecting compressed air hoses to tools like jackhammers, breakers, and compressors
• Water Transfer and Dewatering – Portable pump setups and irrigation systems
• Quarrying and Mining – Slurry, water, and dust suppression systems
• Oil and Gas – Temporary fluid transfer systems or pressure cleaning operations
• Industrial Cleaning – Pressure washers and high-volume water jets

Thanks to their quick-connect design, these couplings are especially valuable in operations that require frequent hose reconfiguration or fast changeovers.

Selecting the correct lug coupling involves considering a range of practical factors:

Media Compatibility – Match the material of your coupling to the fluid or gas being transferred (e.g., stainless steel for corrosive environments, polypropylene for chemicals)

Hose Size and End Type – Ensure proper fitting size and select fixed or free-moving connectors as required

Operating Pressure – Verify that the coupling is rated for your working pressure and application demands

Connection Needs – Consider if you need a blanking cap or plug for safety and flow control when a line isn’t in use

Installation Conditions – Choose flanged versions for static installations or mobile setups needing reinforced attachment

If you’re unsure which hose connectors are best for your system, the Integraflex team is happy to offer guidance and product support.

Order Lug Couplings from Integraflex

At Integraflex, we’re committed to supplying industrial-grade lug couplings, flanged couplings, and quick connect systems that meet your exact requirements. Our selection is trusted across the UK by professionals in construction, engineering, utilities, and beyond.

Why choose Integraflex?

At Integraflex, we offer a comprehensive range of coupling types and sizes to suit virtually any industrial hose system. Our products are available in multiple material options to meet the demands of different
environments, whether you need lightweight polypropylene, durable iron, or corrosion-resistant stainless steel. With fast, UK-wide delivery and expert
technical support on hand, we’re here to help you find the right solution with confidence.