Claw couplings

Claw coupling is a coupling that contains characteristic claws (lugs) that provide a seal between one part of the connection and the other. Claw coupling has a symmetrical design, meaning that there is no split between the socket (female element) and the plug (male element). Thanks to this design, it is very easy to connect them together — just press one part against the other and twist. 

However, it should be noted that claw couplings come in several versions that differ in the spacing of the couplings. This means that you will only connect the same type of claw coupling together. Different types will simply not fit together. What's more, each variant has its own unique application. Among others, the claw couplings are used for the transport of compressed air, water, as well as in pneumatic installations and tools.

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GEKA FEMALE THREAD COUPLING BRASS INPART24

GEKA FEMALE COUPLING - BRASS

Material

brass

Sealing ring

NBR

MATERIAL: BRASS | WORK PRESSURE: 10 BAR | SEALING RING: NBR

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from 8.65zł
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GEKA FEMALE THREAD COUPLING STAINLESS STEEL SS 316 VITON INPART24

GEKA FEMALE COUPLING - SS 316

Material

SS

Sealing ring

Viton

MATERIAL: AISI 316 | WORK PRESSURE: 10 BAR | SEALING RING: VITON (FPM)

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from 40.70zł
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GEKA PLUS FEMALE COUPLING BRASS INPART24

GEKA PLUS FEMALE COUPLING - BRASS

Material

brass

Sealing ring

NBR

MATERIAL: BRASS | WORK PRESSURE: 40 BAR | SEALING RING: NBR

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from 32.94zł
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GEKA PLUS FEMALE THREAD COUPLING STAINLESS STEEL VITON 40 BAR INPART24

GEKA PLUS FEMALE COUPLING - SS 316

Material

SS

Sealing ring

Viton

Work pressure

40 bar

MATERIAL: SS 316 | WORK PRESSURE: 40 BAR | SEALING RING: VITON

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from 204.89zł
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GEKA PLUS END CAP STAINLESS STEEL 40 BAR INPART24

GEKA PLUS END CAP - SS 316

Material

SS

Sealing ring

Viton

Work pressure

40 bar

MATERIAL: SS 316 | WORK PRESSURE: 40 BAR | SEALING RING: VITON (FKM)

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from 189.25zł
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GEKA PLUS END CAP BRASS INPART24

GEKA PLUS END CAP - BRASS

Material

brass

Sealing ring

NBR

Work pressure

40 bar

MATERIAL: BRASS | WORK PRESSURE: 40 BAR | SEALING RING: NBR

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from 29.63zł
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GEKA END CAP STAINLESS STEEL SS 316 INPART24

GEKA END CAP - SS 316

Material

SS

Sealing ring

Viton

Work pressure

10 bar

MATERIAL: AISI 316 | WORK PRESSURE: 10 BAR | SEALING RING: VITON (FKM)

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from 40.70zł
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GEKA END CAP BRASS INPART24

GEKA END CAP - BRASS

Material

brass

Sealing ring

NBR

Work pressure

10 bar

MATERIAL: BRASS | WORK PRESSURE: 10 BAR | SEALING RING: NBR

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from 8.52zł
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GEKA HOSE CONNECTOR BRASS INPART24

GEKA HOSE CONNECTOR - BRASS

Material

brass

Sealing ring

NBR

Work pressure

10 bar

MATERIAL: BRASS | WORK PRESSURE: 10 BAR | SEALING RING: NBR

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from 9.41zł
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GEKA HOSE CONNECTOR STAINLESS STEEL VITON INPART24

GEKA HOSE CONNECTOR - SS

Material

SS

Sealing ring

Viton

Work pressure

10 bar

MATERIAL: AISI 316 | WORK PRESSURE: 10 BAR | SEALING RING: VITON (FKM)

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from 40.70zł
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GEKA PLUS HOSE CONNECTOR 40 BAR BRASS INPART24

GEKA PLUS HOSE CONNECTOR - BRASS

Material

brass

Sealing ring

NBR

Work pressure

40 bar

Norm

DIN ISO 17660

MATERIAL: BRASS | WORK PRESSURE: 40 BAR | SEALING RING: NBR | NORM: DIN 17660

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from 32.05zł
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GEKA PLUS HOSE CONNECTOR STAINLESS STEEL VITON 40 BAR INPART24

GEKA PLUS HOSE CONNECTOR - SS

Material

SS

Sealing ring

Viton

Work pressure

40 bar

Norm

DIN ISO 17660

MATERIAL: SS 316 | WORK PRESSURE: 40 BAR | SEALING RING: VITON (FKM) | NORM: DIN 17660

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from 178.18zł
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Claw couplings - Claw fittings

How is the claw coupling constructed?

The claw coupling is constructed symmetrically. What does this mean? The two sections of the connection are the same — there is no distinction between socket and plug.

Obviously, the distinguishing features of the claw coupling are the claws (hooks) and the tabs into which these claws are inserted. In addition to this, the seal is also important — it is located inside.

As far as the manufacturing material is concerned, the claw couplings are most often made of galvanised cast iron, brass or stainless steel. As standard, they have a seal made of NBR oil-resistant rubber. Exceptions are stainless steel products, where the seal is made of viton.

The next important point is the installation method of the coupling. It depends on the end of the component in question, and there are several of these to choose from:

  • for hoses,
  • with female thread, 
  • with male thread, 
  • with cap.

In addition, there are also claw couplings in the form of tees.

What are the types of claw couplings?

You will find 3 of the most popular types of claw couplings on the market.

  • Claw coupling 40 mm (GEKA claw coupling), 
  • Claw coupling 41 mm,
  • Claw coupling 42 mm.

We have prepared a description of each of them below.

Claw couplings 40 mm (GEKA claw couplings)

The coupling with a 40 mm claw spacing is also known as the GEKA claw coupling. They are very popular.

These types of products are most often used as water claw couplings. Therefore, you will find them in almost all industries, as well as in horticulture and construction.

They are made of brass as standard, but there are also stainless steel versions available. In the first case, they have a seal made of NBR rubber, while the second has a seal made of viton.

They are characterised by high strength, as they can withstand pressures of up to 16 bar, but this depends on the type of coupling. For some, this parameter is only 10 bar.

Claw couplings 41 mm

Couplings with a 41 mm claw spacing represent the US standard. They are used as air claw couplings wherever industry and construction uses US-origin equipment.

They are made of galvanised cast iron and their construction is distinguished by the presence of a special safety pin. Claw couplings have a seal made of oil-resistant rubber (usually NBR).

As far as working pressure is concerned, the American-style air claw coupling can withstand up to 10 bar.

Claw couplings 42 mm

Wherever there is no need for the US version, you will find couplings with a claw spacing of 42 mm. Also used for the transmission of compressed air, but is distinguished by the fact that it comes in several varieties.

These include:

  • standard galvanised cast iron claw coupling with NBR seal (also available with hole for safety pin); 
  • galvanised cast iron claw couplings with a brass seal on the rubber ring; 
  • galvanised cast iron claw couplings with a ring to prevent disconnection and a NBR seal (has a higher pressure rating of 16 bar); 
  • brass claw couplings with NBR seals; 
  • stainless steel claw coupling with viton seal (here the permissible pressure is also 16 bar).

Excluding the two exceptions mentioned in the list, all other varieties can withstand a working pressure of 10 bar.

Claw couplings 42 mm are used for the transmission of compressed air in a wide range of applications. This means that they are used in installations, compressors and pneumatic tools, among others. A perfect example of their use is, for example, the claw coupling for sandblaster.

How to choose the right claw coupling?

To pick the right claw coupling, you need to pay attention to two important points. The first is the distance between the hooks (claws). While the second relates to where they will be installed.

For example, if you need a claw coupling for a hose, choose a product with an end for such installation. The same applies to threaded ends.

Finally, you should also pay attention to the size of the installation. Claw coupling ends are available in many cross-sections. Among the most popular are:

  • 1/2 inch claw coupling,
  • 3/4 inch claw coupling, 
  • 1 inch claw coupling, 
  • 2 inch claw coupling.

When you take the above into account, you will certainly select the right product for your needs.

FAQ

Are the claw couplings symmetrical?

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Yes, the claw couplings are symmetrical. Both parts of the connection look the same — there is no separation between the plug and the socket (male and female parts).

How to connect the claw couplings together?

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You will connect the claw couplings together in a very simple way. All you need to do is press the two parts together and then twist so that the claws enter the tabs designed for them.

Does claw spacing in couplings matter?

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Yes, the spacing between the claws does matter. The two parts of the connection must be the same in this respect. Otherwise, they will not fit together.