(19)

(11)

EP 3 676 500 A1

(12)

(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18836419.4 (22) Date of filing: 19.12.2018

(51) International Patent Classification (IPC):  F04D 29/42(2006.01) F04D 13/16(2006.01) F16K 15/00(2006.01) F04D 13/06(2006.01) F04D 15/00(2006.01) (86) International application number: PCT/IT2018/050254 (87) International publication number: WO 2019/123504 (27.06.2019 Gazette 2019/26)

(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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 19.12.2017 IT 201700146412 (71) Applicant: DGFlow S.r.l. 46030 Bigarello (IT)	(72) Inventor: CONCINI, Stefano 46030 Bigarello (IT) (74) Representative: Manzella & Associati  Via dell'Indipendenza, 13 40121 Bologna 40121 Bologna (IT)