Guillemin symmetrical plug, firefighter, lock and aluminum chain

The Guillemin symmetrical locking plug, designed in high quality aluminum, is the essential accessory to guarantee the integrity of your fluid transfer networks. Also known as a "fireman" plug, it allows you to hermetically seal a wait or to protect your valves and pipes against the intrusion of foreign bodies, dust and humidity. Made in France, this cap combines lightness and robustness to meet the requirements of the most varied sectors.

Safety and practicality: Twist lock and chain

This model features a 360° twist locking ring and jaws (guides) that provide a firm mechanical attachment to the opposite fitting. One of the major advantages of this product is its integrated retaining chain. This allows the plug to be left hanging near the valve or connection when it is open, thus preventing it from being lost on construction sites or unloading areas. This is a crucial detail for industrial maintenance and emergency response where every second counts.

Made in France for total reliability

The French manufacture of this Guillemin cap guarantees impeccable machining precision and aluminum casting quality. Unlike standard models, it ensures a smooth coupling and a constant seal, even after multiple handling cycles. Its symmetrical design allows it to be instantly connected to any half symmetrical fitting. It is particularly suitable for suction and discharge in the fields of firefighting, agriculture (irrigation), construction and steel mills.

Instructions for use and waterproofing

To ensure an airtight seal, the cap is supplied as original equipment with an integrated NBR seal . When putting it on, present the plug facing the fitting to be condemned, make sure the joints are in contact and turn the locking ring by hand until the jaws are fully engaged. For enhanced safety in environments subject to vibration or during prolonged storage of pressurized fluids, we recommend finalizing the tightening with a suitable Guillemin wrench.

Technical characteristics

Protection and cleanliness of networks

In addition to its function as a sealing barrier, this cap plays an essential sanitary role. In the chemical, pharmaceutical or food industries, it prevents cross-contamination by insulating the ducts. Its aluminum is selected for its durability in the face of weather, making it the perfect accessory for tankers and outdoor storage facilities transporting liquids or powders.