(19)

(11)

EP 1 490 612 A1

(12)

(43) Date of publication: 29.12.2004 Bulletin 2004/53 (21) Application number: 03716861.4 (22) Date of filing: 28.03.2003

(51) International Patent Classification (IPC)7: F16K 7/04 (86) International application number: PCT/US2003/009381 (87) International publication number: WO 2003/085297 (16.10.2003 Gazette 2003/42)

(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 PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 01.04.2002 US 369493 P (71) Applicant: EMERSON ELECTRIC CO. St. Louis, Missouri 63136 (US)	(72) Inventors: DILLE, Joseph, C. Telford, PA 18969 (US) PAWLAS, Gary, E. Louisville, CO 80027 (US) (74) Representative: Hale, Peter et al Kilburn & Strode20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)