How to measure Camlock couplings?

Main image for the article about measuring for Camlock couplings. It present a calliper and two types of Camlock couplings.

How to measure Camlock couplings?

To measure Camlock couplings, you need the right tool. In this case, a tape measure, ruler or caliper will suffice. Once you have stocked up on any of these devices, move on to measurements.

The easiest way to do this is to check the size of the hose or pipe end. If the inner diameter of the hose or male/female thread is 2 inches, then the Camlock coupling will also be 2 inches.

However, there is an exception.

There is no international standard for polypropylene Camlock couplings, and different manufacturers offer different head sizes. In the 1/2 inch size, the body is actually 3/4 inch, but the thread (or hose end) is 1/2 inch. There are also some anomalies with 1 1/4 inch size systems.

You will also take measurements on the connectors themselves. You will make them slightly differently depending on whether you are dealing with a male or female end.

How to measure male Camlock couplings?

You will measure male Camlock couplings when you determine the outer diameter. This is the distance between the outer walls of the end at the widest point.

Already have the result? Then compare it with the table below, and you will know which Camlock coupling you are dealing with.

How to measure female Camlock couplings?

You will measure a female Camlock coupling when you determine its inner diameter. This is the distance between the inner walls of the end at the widest point.

Camlock couplings measuring scheme for female Camlock couplings and male Camlock couplings 

As with the male coupling, compare the result with the table below, and you will know the size of the coupling.

Camlock couplings size chart

Camlock Coupling size [inches] Outer diameter of male end [inches] Outer diameter of male end [mm] Inner diameter of female end [inches] Inner diameter of female end [mm]
1/2 15/16 23.8 1 24.6
3/4 1 1/4 31.75 1 5/16 32.74
1 1 7/16 36.5 1 1/2 37.36
1 1/4 1 3/4 45.24 1 13/16 46.23
1 1/2 2 1/16 52.98 2 1/8 53.97
2 2 1/2 63 2 1/2 64
2 1/2 3 76 3 77
3 3 5/8 92 3 11/16 93
4 4 3/4 120 4 3/4 121
5 5 5/8 142.88 5 11/16 143.87
6 6 15/16 175.77 7 177.04

The sizes in millimetres in the table may differ slightly from your result. This is not an error.

Why is measuring Camlock couplings so important?

Measuring Camlock couplings is important because when you use the wrong size of products, the risk of problems that you would otherwise avoid increases.

Picking an incorrect Camlock coupling can lead to the leaks of pipes and hoses. However, there is also a risk that the wrong coupling size will lead to further damage, including the failure of the entire installation. As you may have already guessed, necessary repairs are often time-consuming and extremely expensive.

That's why choosing the right coupling size is so important. It eliminates unnecessary complications in the operation of your water (or other) system.

Always make sure that the Camlock is working properly and provides the correct seal before running the system.

If you are in doubt whether a coupling is safe, check it carefully and (if necessary) make the necessary changes immediately. Pick the correct spare parts and additional accessories for Camlock couplings.

Are all Camlock couplings the same size?

Not all Camlock couplings are the same size. On the market, you will find products of different sizes, which is why selecting the right fittings is so important. This will help you avoid unnecessary troubles (e.g. leaks).

Can I measure Camlock couplings with a tape measure?

Yes, you can measure Camlock couplings using a tape measure. However, if you want the most accurate result, use a digital caliper or electronic ruler.

What are the dimensions of the 4-inch Camlock coupling?

The dimensions of the 4 inch Camlock coupling are as follows: the outer diameter of the male end is 120 mm and the inner diameter of the female end is 121 mm. In the article we have included a table where you can also find the sizes of the other Camlock couplings.

Summary

Taking the time to measure Camlock couplings accurately is very important. Make sure you buy a product that will fit your particular pipe or hose end. Then use end fittings with compatible diameters!

How to measure Camlock couplings? As a reminder, you can measure male Camlock couplings when you check their outer diameter. For female Camlock couplings, on the other hand, measure their inner diameter.

Photo of Bartosz Kułakowski - CEO of Hosetech sp. z o. o.

Articles author

Bartosz Kułakowski

CEO of Hosetech Sp. z o.o.

Bartosz Kulakowski is an industrial hoses and couplings specialist with over 10 years of experience. Bartosz has been present in the technical industry since 2013. He gained experience as a technical and commercial advisor in the sector of plastic conveyor belts, steel structures, industrial hoses, and connectors. Since 2016, he has specialized exclusively in hoses and connectors. In 2019 he opened his own business under the HOSETECH Bartosz Kulakowski brand and since July 2022 he has been the CEO of the capital company HOSETECH Sp z o. o. (LLC).

SPIS TREŚCI

How to measure Camlock couplings?

How to measure male Camlock couplings?

How to measure female Camlock couplings?

Camlock couplings size chart

Why is measuring Camlock couplings so important?

Are all Camlock couplings the same size?

Can I measure Camlock couplings with a tape measure?

What are the dimensions of the 4-inch Camlock coupling?

Summary

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