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(11)

EP 3 033 554 A1

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(43) Date of publication: 22.06.2016 Bulletin 2016/25 (21) Application number: 13891534.3 (22) Date of filing: 15.08.2013

(51) International Patent Classification (IPC):  F16K 15/06(2006.01) F16K 17/30(2006.01) (86) International application number: PCT/CN2013/081511 (87) International publication number: WO 2015/021627 (19.02.2015 Gazette 2015/07)

(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 (71) Applicant: Norgren, Inc. Littleton, Colorado 80120 (US)	(72) Inventors: LIU, Yi Shanghai 200233 (CN) HU, Tingyu Shanghai 201601 (CN) WANG, Jianhua Shanghai 201401 (CN) YIN, Haiwen Shanghai 201102 (CN) (74) Representative: Gray, James  Withers & Rogers LLP 4 More London Riverside London SE1 2AU London SE1 2AU (GB)