The WaStop Inline check valve installs in stormwater systems and outlets, providing immediate protection against flooding and backflow. Its unique, simple, and effective design also prevents unwanted odour, especially at outlets in tidal environments. The standard variant is supplied with an EPDM gasket and mounting tabs. Technical specification: /* Container for specs + image */ .tech-container { display: flex; gap: 20px; align-items: flex-start; } /* Specification table column */ .tech-spec-col { width: 40%; } /* Image column */ .tech-image-col { width: 60%; text-align: center; } .tech-image-col img { max-width: 100%; height: auto; display: block; margin: 0 auto; } /* Mobile: stack table and image */ @media (max-width: 768px) { .tech-container { flex-direction: column; } .tech-spec-col, .tech-image-col { width: 100%; } .tech-image-col { margin-top: 12px; } } Name: WaStop 440 NPS: NPS 18 DN: DN 450 Bolt Circle Diameter (BCD): 585mm Ø Bolt Holes (ØB): 10.5mm Dimension (D): 443mm Max. Flow Volume: 478 l/s Max. Flow Velocity: 3 m/s Max. ID Host Pipe: 464mm Min. ID Host Pipe: 446mm # Bolt holes (#B): 4 Outer Ø (OD): 443mm OD incl. gasket (ODG): 467mm Valve body length (L): 840mm Weight: 25kg