Fire hose fittings

STORZ couplings are couplings that are used in fire protection systems. They were designed in 1882 by Guido Storz and patented eight years later in Switzerland. In many European countries, STORZ couplings have become the standard when it comes to hoses and firefighting equipment. Beside fire protection systems, STORZ couplings are used as general industrial couplings for liquid and bulk substances in the chemical and food industries, as well as in agriculture, construction, irrigation systems or even wastewater transport. 

Fire hose fittings have two handles on the rotary head, which you mount on the hose fitting and secure with a wire ring. Or two fixed-head holders with a threaded connection end, which you screw onto a threaded pipework connection (e.g. a fire hydrant). Their main advantage is that they are quick to connect, as they only require 1/4 turn. In addition, they guarantee a high flow rate, as well as resistance to contamination and external damage.

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STORZ COUPLING WITH MALE THREAD PN 16 FORGED ALUMINIUM INPART24

STORZ MALE THREAD PN16 - FORGED ALUMINIUM

Material

aluminium

Sealing ring

NBR

Norm

DIN ISO 228

MATERIAL: FORGED ALUMINIUM | WORK PRESSURE: 16 BAR | SEALING RING: NBR | MALE THREAD

Available

from 45.47zł
vat excluded

STORZ COUPLING SPANNER KEY FOR ALL SIZE A B C INPART24

STORZ COUPLING SPANNER KEY FOR A/B/C

Suitable for

STORZ

Material

steel

SUITABLE FOR: ALL STORZ COUPLINGS SIZE 66/89/133 MM

Available

from 122.90zł
vat excluded

STORZ END CAP WITH CHAIN PN 16 FORGED ALUMINIUM INPART24

STORZ END CAP PN16 - ALUMINUM

Material

aluminum

Sealing ring

NBR

MATERIAL: FORGED ALUMINUM | WORK PRESSURE: 16 BAR | SEALING RING: NBR

Available

from 38.05zł
vat excluded

STORZ COUPLING END CAP PN 16 BRASS MATERIAL INPART24

STORZ END CAP PN16 - BRASS

Material

brass

Sealing ring

NBR

MATERIAL: BRASS | WORK PRESSURE: 16 BAR | SEALING RING: NBR

Available

from 208.90zł
vat excluded

STORZ END CAP COUPLING WITH CHAIN PN 16 STAINLESS STELL INPART24

STORZ END CAP PN16 - STAINLESS STEEL

Material

SS

Sealing ring

Viton

MATERIAL: AISI 316 | WORK PRESSURE: 16 BAR | SEALING RING: VITON

Available

from 397.13zł
vat excluded

STORZ COUPLING FEMALE THREAD PN 16 FORGED ALUMINIUM INPART24

STORZ FEMALE THREAD COUPLING PN16 - ALUMINUM

Material

aluminum

Sealing ring

NBR

Norm

DIN ISO 228

MATERIAL: FORGED ALUMINUM | WORK PRESSURE: 16 BAR | SEALING RING: NBR | NORM: DIN ISO 228 | FEMALE THREAD

Available

from 37.77zł
vat excluded

STORZ FEMALE THREAD COUPLING PN 6 CASTED ALUMINIUM INPART24

STORZ FEMALE THREAD COUPLING PN6 - ALUMINUM CAST

Material

aluminum cast

Sealing ring

NBR

Norm

DIN ISO 228

MATERIAL: CAST ALUMINUM | WORK PRESSURE: 6 BAR | SEALING RING: NBR | NORM: DIN ISO 228 | FEMALE THREAD

Available

from 28.96zł
vat excluded

STORZ FEMALE THREAD COUPLING FROM BRASS MATERIAL PN16 INPART24

STORZ FEMALE THREAD COUPLING PN16 - BRASS

Material

brass

Sealing ring

NBR

Norm

DIN ISO 228

MATERIAL: BRASS | WORK PRESSURE: 16 BAR | SEALING RING: NBR | NORM: DIN ISO 228 | FEMALE THREAD

Available

from 155.29zł
vat excluded

STORZ COUPLING WITH FEMALE THREAD STAINLESS STEEL PN 16 INPART24

STORZ FEMALE THREAD COUPLING PN16 - STAINLESS STEEL

Material

SS

Sealing ring

Viton

Norm

DIN ISO 228

MATERIAL: AISI 316 | WORK PRESSURE: 16 BAR | SEALING RING: VITON | NORM: DIN ISO 228 | FEMALE THREAD

Available

from 356.62zł
vat excluded

STORZ COUPLING WITH SHORT HOSE TAIL FOR WOVEN HOSES PN 16 FORGED ALUMINIUM INPART24

STORZ COUPLING WITH SHORT TAIL PN16 - FORGED ALUMINIUM

Material

aluminum

Sealing ring

NBR

MATERIAL: FORGED ALUMINUM | WORK PRESSURE: 16 BAR | SEALING RING: NBR | SHORT HOSE TAIL

Available

from 61.00zł
vat excluded

STORZ HOSE CONNECTOR WITH HOSE TAIL STAINLESS STEEL PN16 INPART24

STORZ HOSE CONNECTOR WITH HOSETAIL - SS

Material

SS

Sealing ring

Viton

MATERIAL: AISI 316 | WORK PRESSURE: 16 BAR | SEALING RING: VITON | HOSE TAIL

Available

from 861.79zł
vat excluded

STORZ HOSE CONNECTOR WITH LONG HOSE TAIL PN 6 CASTED ALUMINIUM INPART24

STORZ COUPLING PN10 WITH HOSETAIL - ALUMINIUM CAST

Material

aluminum cast

Sealing ring

NBR

MATERIAL: ALUMINIUM CAST | WORK PRESSURE: 10 BAR | SEALING RING: NBR | HOSE TAIL

Available

from 28.82zł
vat excluded

Fire hose fittings - STORZ couplings

What are the types of STORZ couplings?

STORZ couplings are available in two versions:

  • forged (according to DIN standard), 
  • cast.

The cast version of STORZ coupling has a much lower material strength and is more susceptible to casting defects. This translates into the fact that they are only suitable for low working pressures (up to 6 bar) and undemanding applications.

As for the forged version, on the other hand, it is much more resistant. Therefore, these types of fire hose fittings can withstand pressures of up to 16 bar. Their only disadvantage is the slightly higher price.

However, the division by production method is not exhaustive. Fire hose fittings are also differentiated according to the material they are made of.

From which material are STORZ couplings manufactured?

The STORZ coupling is manufactured from three materials. These include:

  • aluminium (the most common version, which has a white NBR rubber seal as standard); 
  • copper (in this case, a black NBR rubber seal is standard); 
  • stainless steel (here you get a Viton seal as standard).

However, you will also select the type of seal yourself based on your own needs. You can choose from materials such as NBR rubber, viton, EPDM rubber and silicone. The type of seal determines the permissible operating temperature range, the possibility of use in contact with foodstuffs and resistance to oils of the STORZ coupling.

Finally, it is worth adding that, depending on their design, STORZ couplings can be designed either for suction and discharge hoses or for discharge hoses only. In the second case, their standard seal will not be vacuum resistant.

Also check out our range of fire hoses to find the right hoses for your set!

In which dimensions are STORZ couplings available?

When it comes to STORZ couplings, sizes are defined either by the traditional designation referring to the nominal diameter of the hose or by the internal spacing of the STOR couplings.

When selecting the right fittings, take into account that the hook spacing between the two ends must be identical. Otherwise, you will not connect them (unless you use a STORZ reducer).

How is the STORZ coupling assembled?

How STORZ couplings are assembled depends primarily on the type of connection you choose. You can choose between:

  • Fire hose fitting with male or female thread — As the name suggests, the second connection point will have a male or female thread to be screwed into the component. 
  • Hose end — STORZ couplings with hose ends are most often used in static fire situations. Because the hoses do not move as much, they do not get entangled. 
  • Rotary coupling — Thanks to the rotary function, the risk of the hose becoming entangled disappears. For this reason, this STORZ coupling is particularly popular for very active hose use. 
  • Flange connection — This is one of the most popular connections. It involves bolting the flanges together with a seal between them. 
  • Reducer — As you may have guessed, a reducer is used to connect hoses, pipes, and fittings of different sizes.

What are the advantages of STORZ couplings?

Fire hose fittings have many advantages that contribute to their popularity in firefighting and beyond. These are the most important of them:

  • Standard STORZ couplings can withstand operating pressures of up to 16 bar. However, it may be higher or lower depending on the specific model. 
  • Available in several material versions (aluminium, brass, and stainless steel), it is much easier to select a product to suit your needs.
  • The same applies to the seals, which are made of NBR, silicone, EPDM, and Viton. 
  • Fire hose fittings are easy to assemble and disassemble. However, the couplings can become jammed after working under high pressure. This is when a special STORZ clutch key comes in handy. 
  • All STORZ couplings of the same size have the same hook spacing, making them compatible with each other.

FAQ

Where can STORZ couplings be used?

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STORZ couplings are primarily used in firefighting (hence their other name: fire hose coupling). However, they also successfully fulfil their purpose as general industry couplings for the transfer of bulk and liquid media. You will meet them in the chemical industry, food industry, agriculture, construction, etc.

What is the connection system for STORZ couplings?

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As far as the STORZ system is concerned, the connector has special hooks on both sides. A mere 1/4 turn is all it takes to make a tight connection. The coupling can be protected with a wire ring or connected with a thread.

Do I mount and dismount the STORZ coupling manually?

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Yes, thanks to the great simplicity of the STORZ system, the coupling can easily be fitted and removed manually. However, it is worth noting that due to the flow pressure, the couplings can become jammed. In this case, you will need a STORZ clutch key to make disassembly easier.