NF P16-260-4*NF EN 12050-4:2015 Wastewater lifting plants for buildings and sites - Part 4 : non-return valves for faecal-free wastewater and wastewater containing faecal matter
2015NF P16-260-4*NF EN 12050-4:2015 Wastewater lifting plants for buildings and sites - Part 4 : non-return valves for faecal-free wastewater and wastewater containing faecal matter