The WaStop check valve installs in stormwater systems, providing immediate protection against flooding and backflow. Its unique, simple, and effective design also prevents unwanted odour and pest intrusion. This model features a flange for bolting onto a head wall, ensuring secure and fast installation. 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 Flange outlet NPS: NPS 18 DN: DN 450 Max. Flow Velocity: 3 m/s Weight: 31kg # Bolt holes (#B): 12 Bolt Circle Diameter (BCD): 580mm Dimension (D): 443mm Valve body length (L): 840mm Outer Ø (OD): 443mm Ø Bolt Holes (ØB): 13mm Max. Flow Volume: 478 l/s Max. ID Host Pipe: 464mm Min. ID Host Pipe: 446mm