Check valve, type PA-4250, metal seated, with lever and counterweight

Check valve with flanges, flange connection: DN 50 - 150: PN 16, DN 200 - 600: PN 10 or PN 16,
inside stem, face to face according to EN 558-1 series 48 (F6),
body: EN-GJS-500-7 (GGG-50), EKB-coating min 250μm according to GSK
Type PA-4250.127:, seat: bronze, shaft: AISI 420, opturator: AISI 420
Type PA-4250.126: seat/shaft/opturator: stainless steel AISI 316

Optional also in PN 25 and PN 40 available.