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
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
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
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
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.
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.
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 |
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.
