Half symmetrical fitting Guillemin, fireman, with female threaded socket lock in polypropylene

The Guillemin Female Symmetrical Polypropylene Half Fitting with Lock is a connection solution specifically developed for the transfer of corrosive and aggressive fluids. Combining the proven "firefighter fitting" design with the chemical resistance of polymers, this fitting is the ideal tool for environments where standard metals could oxidize or degrade. Its lightweight, inert structure makes it a preferred choice for mobile and industrial applications requiring easy handling and optimal locking security.

Chemical resistance and BSP tapping

Made of high-density polypropylene, this fitting offers excellent compatibility with a wide range of chemicals, acids and bases. It is equipped with a "Gas Pitch" (BSP) thread, the universal piping standard, allowing direct installation on valves, tank outlets or pumping equipment. This material not only prevents corrosion, but also ensures that no metal contamination alters the purity of the conveyed fluid, a major advantage for specific agricultural and industrial sectors.

Secure locking for suction and discharge

This half-fitting incorporates a twist-lock ring (lock) that mechanically secures the connection with the opposite fitting. This system ensures a constant seal regardless of whether the fitting is used for suction or discharge. The lightness of polypropylene significantly reduces the overall weight of flexible piping, making it easier for operators to work during the connection and disconnection phases, while ensuring reliable mechanical resistance under moderate pressure.

Assembly and implementation advice

For the installation of the threaded part, we recommend the use of a PTFE tape or sealant compatible with the polypropylene and the chemical nature of the fluid. For the symmetrical coupling, place the two half-fittings facing each other, making sure that the joints (fitted originally) are clean and in contact. Turn the locking ring manually to engage the jaws of the opposite fitting. Although the handling can be done by hand, the use of a Guillemin key is recommended to ensure a permanent and secure lock.

Technical characteristics

Preferred areas of application

The Guillemin polypropylene fitting is particularly popular in agriculture for the transfer of liquid fertilisers and plant protection products. It is also found in water treatment plants, light chemical industries and for the maintenance of swimming pools or storage tanks. Its ability to resist chemical corrosion while remaining economical makes it a high-performance alternative to stainless steel fittings for many aqueous and corrosive fluid transfer applications.