SS DCV (Stainless Steel Disc Check Valve / Non-Return Valve) features a compact wafer-style body with a spring-loaded centric disc that opens via fluid pressure and seals tightly under compression spring force to prevent backflow. Core Material & Design Specifications • Body Material: Stainless Steel (ASTM A351 CF8 / CF8M, SS 304, or SS 316) • Internal Trim/Disc: Stainless Steel (SS 304 / SS 316) or hardfaced options • Spring Material: SS 304 / SS 316 / Inconel • Seat Type: Metal-to-metal or soft-seated (PTFE, Viton, EPDM, Nitrile) • Design Standard: BS 7438 / EN 558-1 Operating & Sizing Parameters • Size Range: 15 NB to 200 NB (1/2' to 8' nominal pipe sizes) • Pressure Rating: PN 16, PN 40 (Up to 40–42 Bar / Class 150# to 300#) • Temperature Limits: Up to 220°C to 325°C depending on seat material choice • Mounting: Universal orientation; installs in horizontal or vertical pipelines (following flow direction arrows) If you need specifications for a specific brand (like Spirax Marshall or Caliber), a particular size, or a soft-seat compound, please let me know!

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