1. BS 669-1. Flexible hoses, end fittings and sockets for gas burning appliances. Part 1. Strip-wound metallic flexible hoses, covers, end fittings and sockets for domestic appliances burning 1st, 2nd and 3rd family gases. Specification (26th August 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (39 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗