(19)

(11)

EP 3 619 449 A1

(12)

(43) Date of publication: 11.03.2020 Bulletin 2020/11 (21) Application number: 18728456.7 (22) Date of filing: 04.05.2018

(51) International Patent Classification (IPC):  F16K 5/06(2006.01) F16K 11/20(2006.01) F16K 11/087(2006.01) (86) International application number: PCT/IB2018/053105 (87) International publication number: WO 2018/203288 (08.11.2018 Gazette 2018/45)

(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 Designated Validation States: KH MA MD TN (30) Priority: 05.05.2017 IT 201700048826 (71) Applicant: Caleffi S.p.A. 28010 Fontaneto d'Agogna (NO) (IT)	(72) Inventor: CALEFFI, Marco 28010 Fontaneto D'Agogna-Novara (IT) (74) Representative: Siniscalco, Fabio et al Luppi Intellectual Property Srl Via De Amicis, 25 20123 Milano 20123 Milano (IT)