Express Fitting in Brass with Threaded Nozzle, without Seal

Ezfitt Express Fitting in Brass with Threaded Nozzle (Reference: 712) represents the benchmark technical solution for quick and secure connections. This heavy-duty series fitting strictly complies with French standard NF E29-573, guaranteeing perfect compatibility with all Express fittings on the French market. Its forged brass construction and threadless nozzle make it an essential component for professional hydraulic and pneumatic installations.

Applications and Use Cases

The Express Fitting 712 is primarily aimed at professionals in plumbing, industry and agriculture requiring quick and reliable connections. In plumbing, it facilitates temporary connections during maintenance work or emergency interventions on drinking water networks. In the industrial sector, it excels in compressed air circuits up to 10 bar, allowing frequent disconnections of pneumatic tools without pressure loss.

Farmers particularly appreciate it for mobile irrigation systems, where the speed of assembly and disassembly is a decisive advantage. Mechanical workshops also use it to supply portable compressors, inflation guns and pneumatic tools. Its robustness allows intensive use in professional environments, while its ease of use makes it accessible to private individuals for their domestic projects.

Technical Specifications and Innovation

The design according to NF E29-573 standard guarantees a claw spacing of 41 mm, a standardised dimension that ensures total interchangeability with all compliant Express fittings. The forged brass selected offers exceptional resistance to corrosion and mechanical stress, superior to cast or brazed versions. This manufacturing technique gives the fitting a homogeneous density and eliminates the risk of porosity.

The machined ribbed tail features precisely calibrated grooves that optimise the grip of the flexible hose. The integrated collar facilitates assembly with clamp reference 515/1515, creating a reinforced mechanical connection. The ISO 228-1 gas thread meets international standards, allowing direct screwing onto standardised valves, taps and accessories.

Its extended temperature range (-10°C to +70°C) covers the majority of common applications, while the nominal pressure PN 10 meets the requirements of domestic and semi-industrial networks.

Installation and Use

Installing the Express Fitting 712 requires no specialised tools. For the threaded side, screw directly onto the corresponding male element, respecting the direction of rotation and applying moderate torque to avoid damaging the threads. The absence of an integrated seal allows the addition of a seal suited to the fluid being transported: PTFE tape for water, NBR seal for compressed air.

For connection on the ribbed tail side, push the flexible hose in until it reaches the collar stop, then position the clamp in the provided groove. Tighten progressively, alternating the screws to distribute pressure evenly. Check the seal by progressively increasing the pressure.

Maintenance is limited to periodic cleaning with a non-corrosive degreaser and visual inspection of threads and grooves. In the case of limescale deposits, soaking in a domestic descaling solution is sufficient to restore the surface condition.

Expert Tips and Synergies

To optimise the performance of the Express Fitting 712, always pair it with the clamp reference 515/1515 available in our catalogue. This combination guarantees uniform clamping and prevents leaks under pressure. For pneumatic applications, favour reinforced PVC or polyurethane hoses whose rigidity perfectly complements the grooves of the fitting.

A professional tip is to mark with a marker the optimal insertion depth of the hose during the first assembly. This visual reference considerably speeds up subsequent disassembly and reassembly. For outdoor installations, apply a thin layer of silicone grease to the threads to prevent seizing caused by weathering.

Absolutely avoid over-tightening, which deforms the threads and compromises the seal. In the event of a persistent leak, check the condition of the seal and the cleanliness of the contact surfaces as a priority before blaming the fitting itself. For seasonal applications (summer watering), disassemble and store away from frost to preserve the longevity of the components.

Technical Specifications