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 Nominal diameter DN 600 (NPS 24) Max. Flow Velocity 4 m/s (13.1 fps) Weight 52 kg (114.6 lb) # Bolt holes (#B) 6 Bolt Circle Diameter (BCD) 745 mm (29.3 in) Dimension 587 mm (23.1 in) Valve body length (L) 1140 mm (44.9 in) Outer Ø (OD) 587 mm (23.1 in) OD incl. gasket (ODG) 615 mm (24.2 in) Ø Bolt Holes (ØB) 10.5 mm (0.4 in) Max. Flow Volume 1132 l/s (17942.6 GPM) Max. ID Host Pipe 613 mm (24.1 in) Min. ID Host Pipe 590 mm (23.2 in) Fasteners mtrl. 316L stainless steel Gasket EPDM Product sheet (PDF) Technical specification (PDF) Dimensional drawing (PDF)