If you are looking for a Storz coupling to connect transport hoses, drag hoses or, for example, water hoses. Then you are at the right place at Techniparts!
What is a Storz Coupling?
A storz coupling is intended to connect hoses with each other or with fixed fixtures. If you want to connect a Storz coupling, transport hoses, drag hoses and water hoses are used. There is a bayonet fitting in a Storz coupling. If the distance in mm between the cams of the bayonet catch is the same, both couplings fit together. This is called NA (cam distance). If you want to purchase a Storz coupling, you can choose from, among other things, a coupling with hose grommet, an internal thread, an external thread and a compression ring grommet.
Storz couplings are usually made of brass or aluminum. They can be manufactured by casting for general hose connection and low-pressure applications, but for firefighting it is better to use forgings to ensure the safety and durability of the coupling. It is sometimes referred to as a genderless coupling, because instead of having a male and a female end connected by threads, each identical end can be connected to any other end of the same diameter. This is also called hermaphrodite or two-way connection.
Special keys are provided for assistance with the use of Storz connectors. The most important advantage of using Storz couplings is the speed of the hose connection because a hose can be locked with a quarter turn. For comparison: locking hoses with threaded couplings often take several turns. Storz couplings are therefore generally seen as a safer alternative to the use of screw couplings. An additional advantage over threaded couplings is that the connecting surfaces and hooks are less susceptible to damage if the coupling falls on or is dragged onto a hard surface.
What is a Storz connection for?
A Storz coupling is mainly for connecting hoses with each other or with fixed fixtures. The Storz couplings are very suitable for flat rollable hoses. A Storz coupling is mainly used by fire brigades in many European countries (Portugal, Denmark, Germany, Austria, Switzerland, Sweden, the Netherlands, Israel and Greece), but also for industrial applications.
How does a Storz link work?
The Storz coupling is of German origin and consists of two identical parts (half storz coupling). To couple a Storz connection, the two opposite couplings are pressed against each other so that the hooks of each in the slots in the flange of the others are put in. Half a coupling has two or three bulges and the same number of recesses. The number of bulges depends on the diameter. They are then rotated in the opposite direction until they are tight or the catches snap into place. This creates a watertight connection between the internal gasket gaskets. To disconnect them, the latches are released and the connectors are rotated in the opposite direction to the coupling and then separated when the hooks and slots are aligned.
A coupling consists of two identical parts that can be turned into each other. Half a coupling has two or three bulges and the same number of recesses. The number of bulges depends on the diameter.
A pressure coupling is used for hoses that are under pressure. This type of coupling is turned at connection 130 ° and is equipped with a pressure-resistant rubber ring. Usually this type is (very) difficult to disconnect under pressure, which increases safety. There are different standardized types:
A suction hose coupling is used for suction hoses. This type of coupling is turned 90 ° at connection and is equipped with a pressure-resistant rubber ring. The couplings are often equipped with folding handles to make connecting the often stiff hoses easier.
The German Carl August Guido Storz applied for a patent in 1882 on the coupling he invented. Storz was an architect who saw the difficulties of working with screw couplings in a fire in Konstanz, Germany. In 1936 his design became the standard type of coupling in Germany, the so-called "Reichsnormalkupplungen". It was first specified in the FEN 301-316 standard and has been used by German fire brigades since 1933.
Looking for a Storz coupling?
The Techniparts webshop has an extensive range of Storz couplings. There is a choice of various types and sizes. Whether you are looking for a Storz coupling with external thread / internal thread, a blind cap, a tulle short / long or a gradient. Techniparts has it all in many different sizes.