ADVANTICA BRITISH GAS, WRAS, EN331, CE0087 approved gas ball valves on 2010 year, valid till 2013 year only. 　 　 　 　 　 　 ART.EH1080 　 ART.EH1081 　 ART.EH1082 　 ART.EH1083 　 ART.EH1084 　 ART.EH1085 　 　 　 　 　 ART.EH1086 　 ART.EH1087 　 ART.EH1088 　 ART.EH1089 　 ART.EH1090 　 ART.EH1091 　 　 　 　 　 ART.EH1391 　 ART.EH1392 　 ART.EH1393 　 ART.EH1394 　 ART.EH1395 　 ART.EH1396