Why It’s Useful
- Backflow prevention
- One-way fluid control
- Water system regulation
- Durable plumbing components
WS490-S3-316
Regular price
£8,880.00
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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 500 (NPS 20) |
| Max. Flow Velocity | 4 m/s (13.1 fps) |
| Weight | 32 kg (70.5 lb) |
| # Bolt holes (#B) | 4 |
| Bolt Circle Diameter (BCD) | 636 mm (25 in) |
| Dimension | 490 mm (19.3 in) |
| Valve body length (L) | 900 mm (35.4 in) |
| Outer Ø (OD) | 490 mm (19.3 in) |
| OD incl. gasket (ODG) | 518 mm (20.4 in) |
| Ø Bolt Holes (ØB) | 10.5 mm (0.4 in) |
| Max. Flow Volume | 786 l/s (12458.4 GPM) |
| Max. ID Host Pipe | 515 mm (20.3 in) |
| Min. ID Host Pipe | 493 mm (19.4 in) |
| Fasteners mtrl. | 316L stainless steel |
| Gasket | EPDM |
