![21/30441565 DC BS EN 13077. Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B - European Standards 21/30441565 DC BS EN 13077. Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B - European Standards](https://www.en-standard.eu/imgcache/3/4/pi449-21-30441565-dc-21-30441565-DC-BS-EN-13077-Dev_260_260_327021.jpg)
21/30441565 DC BS EN 13077. Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B - European Standards
![BS EN 13077:2008 - Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B (British Standard) BS EN 13077:2008 - Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B (British Standard)](https://webstore.ansi.org/cover-pages/small/BSI/30148373.jpg)
BS EN 13077:2008 - Devices to prevent pollution by backflow of potable water. Air gap with non-circular overflow (unrestricted). Family A. Type B (British Standard)
![DIN EN 13077:2004 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, type B (Foreign Standard) DIN EN 13077:2004 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, type B (Foreign Standard)](https://webstore.ansi.org/cover-pages/small/DIN/9551655.jpg)
DIN EN 13077:2004 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, type B (Foreign Standard)
![DIN EN 13077:2008 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, Type B; German version EN 13077:2008 (Foreign Standard) DIN EN 13077:2008 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, Type B; German version EN 13077:2008 (Foreign Standard)](https://webstore.ansi.org/cover-pages/small/DIN/1468140.jpg)
DIN EN 13077:2008 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, Type B; German version EN 13077:2008 (Foreign Standard)
![UNE EN 13077:2019 Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B - European Standards UNE EN 13077:2019 Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B - European Standards](https://www.en-standard.eu/imagegen.php?name=i439-n0061461/UNE-EN-13077-2019-Devices-to-p.png)
UNE EN 13077:2019 Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B - European Standards
![Characterization of Air Gaps and Their Impact on the Thermal Insulation Performance of Multi-layer Firefighter Clothing | SpringerLink Characterization of Air Gaps and Their Impact on the Thermal Insulation Performance of Multi-layer Firefighter Clothing | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs10694-022-01222-5/MediaObjects/10694_2022_1222_Fig4_HTML.png)
Characterization of Air Gaps and Their Impact on the Thermal Insulation Performance of Multi-layer Firefighter Clothing | SpringerLink
![DIN EN 13077:2018 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B; German version EN 13077:2018 DIN EN 13077:2018 - Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B; German version EN 13077:2018](https://webstore.ansi.org/cover-pages/small/DIN/2852156.jpg)