ISO 7241 A Quick Couplings
ISO 7241 is a standard for push-to-connect and ball-lock hydraulic quick-release couplings. The standard specifies two series of hydraulic quick couplings. They are series A and series B. ISO 7241 Series A hydraulic quick-release couplings are widely used in many applications, especially in agricultural and forestry machinery. usually used to connect the hydraulic hose to the hydraulic equipment.
A6000 Series
AKJia’s A6000 series is a general-purpose, double shut-off, push-to-connect, hydraulic quick disconnect coupler, fluid transfer quick coupling available with leak-free, high flow poppet valve. The A6000 Series complies with ISO 7241 Series A.
A6100 Series
AKJia’s A6100 series is another ISO A coupler general-purpose, double shut-off, fluid transfer quick coupling available with a leak-free, high-flow poppet valve that is similar to our A6000 Series.
A6200 Series
AKJia’s A6200 series is an ISO A coupler with male threads design, a general-purpose, double shut-off, fluid transfer quick coupling available with a leak-free, high flow poppet valve.
A6300 Series
AKJia’s A6300 Series is stainless steel ISO A quick-release couplings, a double shut-off, Stainless Steel SS316 material, and high flow poppet valve, ISO 7241 A series Quick Coupling.
A6600 Series
A6600 Series is another appearance of ISO A Quick Coupling( ISO 7241 Series A ), they are custom OEMs produced for some customers from Europe.
A6800 Series
AKJia’s A6800 Series is another ISO 7241 Series A Quick Coupling, that we developed as some customers’ requirements. Currently, they are only available on body sizes of 3/4″(20) and 1″(25).
FAQ
What is an ISO A Quick Coupler?
ISO A quick coupling is the series A quick coupling of ISO 7241 standard. It is popular in Europe and is widely used in agricultural and forestry machinery. Different brands of quick couplings can be interchangeably connected as long as they meet the dimensional requirements of ISO 7241 series A. However, there are some differences in the performance requirements of ISO A quick couplings made of different materials. Carbon steel is commonly used in hydraulic systems. For chemical fluid transfer and lower pressure applications, stainless steel or brass can be used.
ISO 7241- 1 Series A dimensions
ISO 7241-1 specifies the dimensional requirements for two series of quick couplings, one of which, Series A, is mainly used in Europe, as well as for a wide range of applications in agricultural and forestry machinery.
| Body Size(mm) | Body Size (inch) |
D1 | D2 | D3 | D4b min | D5 | L1 | L2c | L3 | L4 | L5 min |
L6 max |
L7 min |
α1 |
| 6,3 | 1/4” | 18.7 | 12.9 13 |
11.73 11.86 |
1.9 | 3.698 | 2.8 | 0.7 1.5 |
5.5 5.7 |
6.6 6.8 |
14.5 | 0.5 | 3.7 | 44˚ 46˚ |
| 10 | 3/8” | 24.1 | 18.3 18.4 |
17.2 17.3 |
3 | 3.698 | 3.8 | 0.7 1.5 |
8.8 9 |
9.8 10 |
18 | 0.5 | 7 | |
| 12,5 | 1/2” | 30.3 | 23.66 23.74 |
20.48 20.56 |
4.5 | 4.762 | 4 | 0.7 1.5 |
9.2 9.4 |
11.6 11.8 |
24 | 0.5 | 8 | |
| 20 | 3/4” | 37.1 | 30.4 30.5 |
29 29.1 |
5.4 | 4.762 | 7.2 | 1 2.5 |
15.9 16.1 |
17.5 17.7 |
27.5 | 0.6 | 13.7 | |
| 25 | 1” | 43.0 | 36.5 36.6 |
34.21 34.34 |
7.8 | 4.762 | 8.5 | 1.5 3 |
19.7 20 |
22.8 23 |
34 | 0.7 | 16.3 | |
| 31,5 | 1-1/4” | 56.0 | 47.7 47.8 |
44.9 45 |
8.9 | 6 | 11 | 2 4.5 |
24.9 25.1 |
28.4 28.6 |
43 | 0.7 | 24 | |
| 40 | 1-1/2” | 68.5 | 57.5 57.6 |
54.9 55 |
9.9 | 8 | 13 | 3 6 |
30.6 30.8 |
33.7 33.9 |
51 | 0.8 | 29.6 | |
| 50 | 2” | 83.7 | 69.9 70 |
65 65.1 |
9.9 | 10 | 16.6 | 3 7 |
35 35.2 |
39.6 39.8 |
61 | 0.8 | 34 |
ISO A Quick Coupling Material option
The body of the quick coupling must be made of carbon steel, in full compliance with the requirements of ISO 7241 series A. This is because only carbon steel can provide sufficient pressure performance for use in hydraulic systems.
Other materials, such as stainless steel, brass, etc., can be used for different applications. For example, stainless steel can provide better corrosion resistance. It is especially used in the chemical industry.
Although these other materials are not fully compliant with the ISO 7241 standard, they are usually referred to as ISO A quick couplings. This is because they are interchangeable in terms of connection size.
Customized Your ISO A Quick Coupling
Custom ISO A quick couplings are usually designed to meet the dimensional requirements of ISO 7241 series A in terms of connection size, but in other aspects, their dimensions are customized to meet the customer’s needs. There are also cases where the seal material, body material, threads, etc. need to be changed for special fluids, pressures, operating temperatures, etc. Or some customers need to have their own brand characteristics and have their own characteristics in the appearance of the quick coupling.
How to Customize Your Quick Coupling?
To customize your quick coupling, you need to talk to us about the requirements of your quick coupling application. Common requirements include the working temperature, working pressure, flow rate, fluid to be used, and many other requirements. These requirements may require changes to some fittings.
When customizing products, it is the best solution if you have a sample, if you have a sample, you can select I have a sample in the form and ship the sample to us. This way we will produce your quick coupling according to your sample.
If no sample is available, a design drawing is required. The connection dimensions of quick couplings are in accordance with ISO standards, so most of the components can be used in common. Some dimensions and designs need to be discussed with us. We can manufacture to your specifications.
