WaStop double collar Technical specification Nominal diameter DN 800 (NPS 32) Max. Flow Velocity 4 m/s (13.1 fps) Weight 81.1 kg (178.8 lb) # Bolt holes (#B) 6 Bolt Circle Diameter (BCD) 928 mm (36.5 in) Dimension 790 mm (31.1 in) Valve body length (L) 1000 mm (39.4 in) Outer Ø (OD) 790 mm (31.1 in) OD incl. gasket (ODG) 818 mm (32.2 in) Ø Bolt Holes (ØB) 10.5 mm (0.4 in) Max. Flow Volume 2012 l/s (31890.8 GPM) Max. ID Host Pipe 811 mm (31.9 in) Min. ID Host Pipe 791 mm (31.1 in) Fasteners mtrl. 316L stainless steel Gasket EPDM Product sheet (PDF) Technical specification (PDF) Dimensional drawing (PDF)