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 800 (NPS 32)
Max. Flow Velocity 4 m/s (13.1 fps)
Weight 94 kg (207.2 lb)
# Bolt holes (#B) 6
Bolt Circle Diameter (BCD) 928 mm (36.5 in)
Dimension 790 mm (31.1 in)
Valve body length (L) 1500 mm (59.1 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 807 mm (31.8 in)
Min. ID Host Pipe 795 mm (31.3 in)
Fasteners mtrl. 316L stainless steel
Gasket EPDM