(19)

(11)

EP 2 935 963 A1

(12)

(43) Date of publication: 28.10.2015 Bulletin 2015/44 (21) Application number: 13802580.4 (22) Date of filing: 05.12.2013

(51) International Patent Classification (IPC):  F16L 21/04(2006.01) F16L 21/08(2006.01) (86) International application number: PCT/EP2013/075611 (87) International publication number: WO 2014/102045 (03.07.2014 Gazette 2014/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 24.12.2012 NL 2010057 (71) Applicant: Georg Fischer WAGA N.V. 8161 PA Epe (NL)	(72) Inventor: VAN DER VELDE, dhr. Jurrien NL-8276 AK Zalk (NL) (74) Representative: Fenner, Seraina  Georg Fischer AG Amsler-Laffon-Strasse 9 8201 Schaffhausen 8201 Schaffhausen (CH)