(19)

(11)

EP 1 646 821 A1

(12)

(43) Date of publication: 19.04.2006 Bulletin 2006/16 (21) Application number: 04721560.3 (22) Date of filing: 18.03.2004

(51) International Patent Classification (IPC):  F16L 41/12(1990.01) (86) International application number: PCT/GB2004/001158 (87) International publication number: WO 2004/083708 (30.09.2004 Gazette 2004/40)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 18.03.2003 GB 0306196 (71) Applicant: Potable Pipe Fittings LTD 4 University Way, London E16 2RD (GB)	(72) Inventor: POTTER, Ralph Essex IG9 5RB (GB) (74) Representative: Crawford, Andrew Birkby et al A.A. Thornton & Co., 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)