WaStop double collar Technical specification Nominal diameter DN 200 (NPS 8) Max. Flow Velocity 2 m/s (6.6 fps) Weight 3.9 kg (8.6 lb) # Bolt holes (#B) 2 Bolt Circle Diameter (BCD) 350 mm (13.8 in) Dimension 215 mm (8.5 in) Valve body length (L) 300 mm (11.8 in) Outer Ø (OD) 215 mm (8.5 in) OD incl. gasket (ODG) 235 mm (9.3 in) Ø Bolt Holes (ØB) 8.5 mm (0.3 in) Max. Flow Volume 80 l/s (1268 GPM) Max. ID Host Pipe 233 mm (9.2 in) Min. ID Host Pipe 216 mm (8.5 in) Fasteners mtrl. 316L stainless steel Gasket EPDM Product sheet (PDF) Technical specification (PDF) Dimensional drawing (PDF)