GESTRA DISCO Non-return valve RK 41 with short overall length acc. to EN 558-1, Tab. 11, series 49 (K4 – Building length)<\/p>\n
Installation in any position
\nBody centering by spiral ring or rather directly on the body
\nOpening pressure 5 mbar for DN 15 \u2013 DN100; 10 mbar for DN 125 \u2013 DN 200
\nSpecial spring for different opening pressures available<\/p>\n
Nominal size:
\nDN 15, DN 20, DN 25, DN 32, DN 40, DN 50, DN 65, DN 80, DN 100,
\nDN 125, DN 150, DN200<\/p>\n
Pressure rating:
\nPN 6, PN 10, PN 16<\/p>\n
End connections:
\nDIN\/EN<\/p>\n
Materials:
\nDN 15-100:
\nBody, Seat, Guide ribs: Special brass CW 710 R
\nDisc, Control spring, Spring: Stainless steel 1.4571<\/p>\n
DN 125 \u2013 DN200:
\nBody, Guiding: Cast iron EN-JL 1040
\nSpring: Stainless steel 1.4571
\nCone, Adapter: Nodular cast iron EN-GJS-400-15
\nGuiding: Steel UZSt37-2
\nCasing: Chromium steel X5CrNi18-10<\/p>\n
Standard:
\nMetal to metal<\/p>\n
Optional:
\nSoft sealing EPDM or FPM<\/p>","protected":false},"excerpt":{"rendered":"
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