(19)

(11)

EP 2 516 908 A1

(12)

(43) Date of publication: 31.10.2012 Bulletin 2012/44 (21) Application number: 10805476.8 (22) Date of filing: 22.12.2010

(51) International Patent Classification (IPC):  F16K 31/52(2006.01) F16K 27/00(2006.01) E03B 9/02(2006.01) (86) International application number: PCT/GB2010/002320 (87) International publication number: WO 2011/077092 (30.06.2011 Gazette 2011/26)

(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 (30) Priority: 23.12.2009 GB 0922587 (71) Applicant: Crane Limited Hitchin, Hertfordshire SG4 0UD (GB)	(72) Inventor: CLARK, Paul Bedfordshire LU7 4UE (GB) (74) Representative: Boden, Keith McMurray  Fry Heath & Spence LLP The Gables Massetts Road Horley Surrey RH6 7DQ Horley Surrey RH6 7DQ (GB)