Axial disc check valve Series B6 40 Axial disc check valve ensuring the protection of pumps or of parts of networks against flow inversion. Description • Anticipated closing limiting the intensity of the check valve shock. • Silent. • Low head loss. • Hydraulically profiled disc optimising the passing of the flow. • Sealing, even with low pressure, ensured by flat gasket mounted on the disc. • Easily removable guide. • Lateral body bosses which can be drilled on request to enable the mounting of manometers or by-pass (DN 50 to 150). • Standard stainless steel spring. • Internal and external epoxy coating. • Horizontal or ascendant vertical mounting. • Cable-pass for pump • Maintenance-free. Technical data • Range: DN 50 to 250. • Maximal working pressure: PN 16 • Temperatures: from -10°C to +80°C. • Seating: Category A according to standard ISO 5208. Tightness weir: from minimum differential pressure of 5 mWC. • Flange drilling according to standards EN 1092-2 and or according to standards ANSI B 16.5: Applications • Pumping stations for water distribution and irrigation (filtered water). • Drinking water networks. • Irrigation networks (filtered water). • Fire protection networks.

Axial disc check valve DN 50 to 80 Hydraulic features (Curves established for water at 20°C, check valve with standard spring mounted on horizontal pipe). Body * Disc ** Guide** Stem (DN 100 to 150) Stem ** (DN 200 to 250) Flat gasket Spring Stem nut Flat seal Bearing (DN 50 to 80) Bearing (DN 200 to 250) Cast iron /EN-GJL 250 Cast iron /EN-GJL 250 Cast iron /EN-GJL 250 Stainless steel 303/X8CrNiS 18-9 Copper alloy /CuSn5Zn5Pb5 Elastomer/EPDM*** Stainless steel 302/X10CrNi 18-8 Zinc-coated Steel / Steel 8.8 Elastomer/EPDM*** Nylon 6 + S2Mo/PA6+S2Mo Bronze/CuSn39Pb2 * Blue epoxy coating. ** Blue...