2019BS 6891:2015+A1:2019 Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R114) on premises
2015BS 6891:2015 Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R1?) on premises
2005BS 6891:2005+A2:2008 Installation of low pressure gas pipework of up to 35 mm (R1 1/4)in domestic premises (2nd family gas) - Specification
2005BS 6891:2005 Installation of low pressure gas pipework of up to 35 mm (R11/4) in domestic premises (2nd family gas) - Specification
1998BS 6891:1998 Specification for installation of low pressure gas pipework of up to 28 mm (R1) in domestic premises (2nd family gas)
1977BS 5482-2:1977 Domestic butane- and propane-gas-burning installations - Installations in caravans and non-permanent dwellings