Storz Couplings

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Storz couplings

If you are looking for a Storz coupling to connect transport hoses, drag hoses or, for example, water hoses. Then Techniparts is the right place for you!

What is a Storz Couplings?

A Storz coupling is intended to connect hoses to each other or to fixed fittings. If you want to connect a Storz coupling, you use transport hoses, drag hoses and water hoses. There is a bayonet fitting in a Storz coupling. When the distance in mm between the cams of the bayonet fitting is the same, both couplings fit together. This is called NA (cam distance). The Cam distance of the Storz coupling therefore determines whether you can successfully connect the hose. If you want to purchase a Storz coupling, you can choose from, among other things, a coupling with hose tail, an internal thread, an external thread and a compression ring grommet.

Material

Storz couplings are usually made of brass or aluminum. They can be made by casting for general hose connection and low pressure applications, but for fire fighting it is better to use forgings to ensure the safety and durability of the coupling. The designation is sometimes a sexless pairing. This is 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. Another name for this is hermaphroditic or two-way connection.

Special tools

Special wrenches are provided for assistance in using Storz connectors. The main advantage of using Storz couplings is the speed of the hose connection, as a hose can be locked with a quarter turn. In comparison, locking hoses with threaded couplings often take several turns. The Storz couplings are generally the safest 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 is dropped or dragged on a hard surface.

For what is a Storz coupling?

A Storz coupling is mainly used to connect hoses to each other or to fixed fittings. The Storz couplings are very suitable for hoses that can be rolled up flat. A Storz coupling is used by the fire service in many European countries (Portugal, Denmark, Germany, Austria, Switzerland, Sweden, the Netherlands, Israel and Greece), but also for industrial applications.

How does a Storz coupling work?

The Storz coupling is of German origin and consists of two identical parts (half Storz coupling). To connect a Storz connection, connect the two opposite couplings together. You press these together, so that the hooks of both can be inserted into the slots in the flange of the other. A half coupling has two or three bulges and the same number of recesses. The number of bulges depends on the diameter. They are then turned in opposite directions until they are tight or the latches click into place. creating a watertight connection between the internal packing gaskets. To disconnect them, you must release both the latches and turn the connectors in the opposite direction of the coupling. To then separate them when the hooks and slots line up.

Design

A coupling consists of two identical parts, allowing you to screw them together. A half coupling has two or three bulges and also the same number of recesses. The number of bulges depends on the diameter.

Pressure coupling

For hoses that are under pressure, use a pressure coupling. This type of coupling rotates at a connection of 130° and is also fitted with a pressure-resistant rubber ring. Usually this type is (very) difficult to disconnect under pressure, which increases safety. There are several standardized types:

Suction coupling

For suction hoses, use a suction hose coupling. This type of coupling rotates at a connection of 90° and is also fitted with a pressure-resistant rubber ring. The couplings are often equipped with fold-out handles, making it easier to connect the often stiff hoses.

Inventor

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 involved in working with screw couplings during 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 standard FEN 301-316 and has been used by German fire brigades since 1933.

Where can I buy 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 male thread / female thread, a blind cap, a grommet short / long or a Storz coupling adapter. Techniparts has it all in many different sizes.

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