WaStop double collar Technical specification Nominal diameter DN 150 (NPS 6) Max. Flow Velocity 2 m/s (6.6 fps) Weight 0.7 kg (1.5 lb) # Bolt holes (#B) 2 Bolt Circle Diameter (BCD) 261 mm (10.3 in) Dimension 144.5 mm (5.7 in) Valve body length (L) 200 mm (7.9 in) Outer Ø (OD) 144.5 mm (5.7 in) OD incl. gasket (ODG) 160.5 mm (6.3 in) Ø Bolt Holes (ØB) 8.5 mm (0.3 in) Max. Flow Volume 36 l/s (570.6 GPM) Max. ID Host Pipe 159 mm (6.3 in) Min. ID Host Pipe 146 mm (5.7 in) Watertightness EN 13564 Fasteners mtrl. 316L stainless steel Gasket EPDM Product sheet (PDF) Technical specification (PDF) Dimensional drawing (PDF)