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 690 NPS: NPS 28 DN: DN 700 Bolt Circle Diameter (BCD): 825mm Ø Bolt Holes (ØB): 10.5mm Dimension (D): 687mm Max. Flow Volume: 1540 l/s Max. Flow Velocity: 4 m/s Max. ID Host Pipe: 710mm Min. ID Host Pipe: 692mm # Bolt holes (#B): 6 Outer Ø (OD): 687mm OD incl. gasket (ODG): 715mm Valve body length (L): 1300mm Weight: 73kg