Quick Coupling with Threaded End, Supplied with Fitted Seal

Quick Coupling with Threaded End Ezfitt (Reference: 512) - Professional heavy-duty connection solution compliant with French standard NF E29-573. This forged brass coupling with threaded end and fitted seal is an essential component for hydraulic and pneumatic installations requiring reliability and lasting performance.

Applications and Fields of Use

This Ezfitt Quick Coupling meets the specific needs of plumbing professionals, industry and demanding end users. It is perfectly suited to cold and hot water installations as well as compressed air circuits in workshops, garages and industrial facilities.

Thanks to its machined barbed tail with collar design, it ensures a secure connection with flexible hoses. Its ISO 228-1 gas thread makes it compatible with all standard threaded elements, facilitating integration into existing systems.

Technical Specifications and Materials

Manufactured in forged brass, this Quick Coupling benefits from exceptional resistance to corrosion and mechanical stress. The forging process guarantees a homogeneous structure and precise dimensions, essential for maintaining sealing under pressure.

The French standard NF E29-573 requires a jaw spacing of 41 mm, ensuring full compatibility with all Quick Couplings of the same standard available on the market. This standardisation facilitates maintenance operations and allows component interchangeability.

The integrated type A lip seal in NBR (nitrile rubber) provides optimal sealing over a temperature range of -10°C to +70°C. This elastomer perfectly resists oils, fuels and most industrial fluids.

Installation and Implementation

Installing this Quick Coupling is carried out in two simple steps. First, screw the threaded end onto the element to be connected, following the correct tightening direction and applying an appropriate torque to avoid thread deformation.

Second, push the flexible hose onto the barbed tail up to the collar, then secure the assembly with the recommended clamp 515/1515. The machined barbs provide optimal mechanical grip on the hose, preventing any risk of disconnection under pressure.

Before commissioning, check the condition of the NBR seal and its correct position in the designated groove. A damaged or incorrectly positioned seal would compromise the sealing integrity of the installation. Always perform a pressure test at nominal pressure before use.

Expert Advice and Product Synergies

To optimise the service life of your installation, pair this Quick Coupling with appropriate quality hoses and stainless steel clamps. The quality of these peripheral elements directly influences the overall performance of the system.

In environments subject to vibration, prefer the use of anti-vibration hoses to preserve the integrity of the connections. For high-temperature applications, check the thermal compatibility of the hose with the operating range of the coupling.

When replacing, always keep a few spare NBR seals in stock. These wear parts may require periodic replacement depending on operating conditions. Also consider stocking Quick Couplings of different diameters to adapt your installation to future developments.

Technical Specifications