Guillemin symmetrical connection, firefighter, ringed in stainless steel

Guillemin's symmetrical half-coupling with corrugated bushing in AISI 316 Stainless Steel (Inox CF8M) represents the ultimate in reliability for the transfer of critical fluids. Designed for permanent crimping onto flexible hoses, this "fireman's" fitting is the preferred solution when operating conditions demand exceptional thermal and chemical resistance. Its 1.4401 stainless steel construction makes it immune to atmospheric corrosion and aggressive agents, guaranteeing unrivalled durability in the most hostile environments.

AISI 316 stainless steel: the benchmark for sensitive industries

The use of CF8M stainless steel (the cast equivalent of AISI 316) enables this fitting to meet the stringent requirements of the petrochemical, pharmaceutical and food industries. Unlike aluminum or bronze, 316 stainless steel retains its mechanical properties when exposed to a wide range of acids and chemicals. It is ideally suited to the transport of corrosive bulk liquids and abrasive powders, ensuring optimum transfer purity without the risk of oxidative contamination.

Hydraulic safety and extreme performance

This symmetrical coupling not only resists corrosion, it also boasts impressive pressure characteristics, in compliance with NF E 29.572 and NF EN 14420-8 standards. With a working pressure of 16 bar, it can withstand a test pressure of 32 bar, and has a burst point of 50 bar. This robustness makes it indispensable for high-pressure delivery and suction operations in steel mills, heavy construction sites and industrial fire-fighting systems.

Assembly tips and high-quality sealing

To guarantee a hermetic connection, our Guillemin stainless steel fittings are equipped with NBR seals, renowned for their versatility. The assembly protocol remains intuitive: present the coupling halves face to face, ensure that the seals are in perfect contact, then rotate the locking rings (360° rotating locks) to engage the jaws. To secure the installation against mechanical vibrations and pressure variations, it is imperative to finalize tightening with a suitable Guillemin wrench.

Technical specifications

Versatility and fields of application

Thanks to its excellent biocompatibility and thermal resistance (0°C to +50°C with standard gasket), this fitting is used in maintenance, intensive agriculture (acid fertilizers), irrigation and construction. Its corrugated bushing allows perfect adaptation to different crimping systems: deep-drawn skirts, swivel clamps, straps or toothed skirts. Choosing 316 stainless steel for your Guillemin fittings means opting for operational peace of mind and drastically reducing replacement costs due to corrosion.