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(11)

EP 4 396 478 A1

(12)

(43) Date of publication: 10.07.2024 Bulletin 2024/28 (21) Application number: 22785786.9 (22) Date of filing: 31.08.2022

(51) International Patent Classification (IPC):  F16K 3/02(2006.01) F16K 3/316(2006.01) F16K 3/28(2006.01) (52) Cooperative Patent Classification (CPC): F16K 3/316; F16K 3/28 (86) International application number: PCT/IB2022/058154 (87) International publication number: WO 2023/031812 (09.03.2023 Gazette 2023/10)

(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: 31.08.2021 PT 2021117432 (71) Applicant: FUCOLI-SOMEPAL FUNDIÇÃO DE FERRO, S.A. 3001-906 Coimbra (PT)	(72) Inventor: MIMOSO LEMOS, Carlos Manuel 3050-903 Pampilhosa (PT) (74) Representative: Patentree  Edificio Net Rua de Salazares, 842 4149-002 Porto 4149-002 Porto (PT)