ISO 7241 Series B Quick Couplings

ISO 7241 B series hydraulic quick coupling is another quick coupling in ISO 7241 standard. ISO 7241 B hydraulic quick couplings are more widely used in North America, and they will be available in different materials. For example, ISO B brass material quick couplings are widely used in carpet extractor steamer machines. ISO B stainless steel quick couplings are used for domestic plumbing connections. Compared to flat quick-release couplings, ISO B is less expensive and more durable. Compared to Europe where ISO A quick couplings are more popular, North America prefers ISO B quick couplings.

B8000 Series ISO B Quick Couplings

B8000 Series

AKJia’s B8000 Series is a general-purpose, double shut-off quick coupling capable of containing a wide variety of fluids. ISO 7241 Series B quick couplings are used predominantly in North America and in the chemical industry.

B8300 Series ISO B Stainless Steel Quick Couplings

B8300 Series

AKJia’s B8300 is a special ISO 7241 Series B Quick coupling product that uses the Stainless steel 316 material. The dimensional requirements complied with ISO 7241 Series B, and the working pressure performance would be worse than that made by carbon steel. 

B8600 Series ISO B Brass Quick Couplings

B8600 Series

AKJia’s B8600 Series is a special Brass material body ISO 7241 B series quick couplings, usually used for water applications, or steam.

B8630 Series ISO B Stainless Steel Quick Couplings

B8630 Series

AKJia’s B8630 Series is another Stainless steel Quick coupling, the material is stainless steel 304, from 1/8″ to 1″ body size comply with ISO 7241 B series dimensional requirements.

B8600-ISO-B-Brass-Quick-Couplings

B8800 Series

B8800 Series is another brass ISO 7241 B Series Quick Coupling, the male threads version alternative of the B8600 series.

FAQ

What is ISO B Quick Coupling?

ISO B quick couplings are those that meet the dimensional requirements of ISO 7241 series B. The ISO 7241 standard refers to quick couplings for hydraulic applications, which require high working pressures and therefore are made of carbon steel. Other materials, such as stainless steel, brass, etc., because only the connection dimensions meet ISO 7241 series B, but other aspects of performance are not fully compliant. We usually call them ISO B quick couplings.

ISO B Quick Coupling Dimensions?

The dimensional requirements for quick coupling connections are specified in ISO 7241 series B. The internal specifications are mainly for the important dimensions of the male connector.

ISO B Quick Coupling Dimensional Requirements

Dimensional requirements for Series B couplings  Sizes 1/8″ to 1″

Body Size
(mm)
Body Size
(inch)
D7 D8 D9 D10
min.
D11
±0.0025
L10
max.
L11b L12
min.
L13 L14
min.
L15
max.
α2
max.
5 1/8″ 16.69 12.09
12.19
10.8
10.9
2.16 3.175 2.79 0.64
1.32
7.87 11.28
11.48
18.92 0.5 16˚
6.3 1/4″ 21,21 15.6
15.7
14.1
14.2
2.54 3.967 4.06 1.07
1.73
9.65 13.41
13.61
22.1 0.5
10 3/8″ 26,87 20.04
20.14
19
19.1
3.05 4.763 4.83 1.07
1.73
12.45 15.52
15.72
24.89 0.5
12.5 1/2″ 33,45 25.65
25.76
23.44
23.55
4.57 5.555 5.08 1.07
1.73
12.19 17.17
17.37
27.94 0.5
20 3/4″ 41,66 32.66
32.77
31.34
31.45
5.08 6.35 7.37 1.45
2.51
18.8 22.86
23.06
35.56 0.6
25 1″ 49,38 40.46
40.56
37.69
37.8
6.1 6.35 8.64 1.45
2.51
20.57 27.36
27.56
40.39 0.7

ISO 7241 B Quick Couplers Dimensional Requirements

Dimensional requirements for Series B couplings – Sizes 1-1/2″ and 2″

Body Size
(mm)
Body Size
(inch)
D12 D13 D14 D15
min.
D16 L16b L17
min.
L18 L19
min.
L20
max.
L21 D17
±0.0025
α3
max.
40 1-1/2″ 59.13 47.96
48.06
44.4
44.5
8.89 38.05
38.15
1.4
2.54
32.56 38.91
39.17
53.34 10 26.36
26.87
7.938 21˚
50 2″ 85.6 66.55
66.68
63.14
63.27
10.16 53
53.16
1.4
2.54
38.1 45.16
45.42
65.02 15 32
32.51
12.7
Body Material Options

Quick couplings are fully compliant with ISO 7241 series B. They can only be made of carbon steel and are often used in hydraulic systems. Other materials, stainless steel, and brass are used for other applications, for different purposes. For example, in the chemical industry, where the fluid is highly corrosive, stainless steel is often used. For water piping applications, brass or stainless steel is commonly used.

Customize Your ISO B Quick Couplings

Custom ISO B quick-release couplings, the connection dimensions are in accordance with ISO 7241 series B, and some dimensions not related to the connection can be customized to meet your specific needs. For customization, the body material and seal material can be selected to meet the requirements of different fluid materials, operating temperatures, and pressures.

    Product
    Material
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