WaStop® Inline Non-Return Valves – The Original, from the UK’s Sole Importer
The genuine WaStop® inline check valve stops backflow, flooding and sewer odour with no moving parts, no power and no maintenance. AQUIKO is the UK’s sole importer of the WaStop.
- Sizes DN75 to DN2000, with bespoke sizes made to order
- Fits at any angle, inside, between or at the end of a pipe
- Same-day dispatch on stocked sizes up to 600mm
Prices on request – quotes the same working day.
How the WaStop works
The WaStop uses a flexible membrane that opens under the pressure of normal flow and closes when flow stops or reverses. It works on differential pressure alone, so it needs no electricity, no floats and no hinges. When it is closed it seals positively, which stops backflow and keeps sewer odours and rodents out of the pipe.
Because it opens at a low head, a WaStop loses less head than a flap valve or duckbill of the same bore. A 215mm WaStop achieves the same head loss as a typical 300mm+ duckbill valve.
Why choose the original WaStop®
- Genuine product, UK sole importer. Made by Wapro and supplied in the UK by AQUIKO.
- No moving parts. Nothing to seize, corrode or jam; virtually maintenance-free and resistant to blockage.
- Installs at any angle. Horizontal, vertical or sloping pipes, including outfalls with no headwall.
- Retrofits in minutes. Pushed into the existing pipe and secured with bolts or a flexible coupling.
- Published performance. Wapro publishes opening and closing pressures for every size – ask us for the data for your DN.
Where WaStop valves are used
Surface water and storm outfalls · foul and combined sewers · attenuation tanks and ponds · cellars and basements (odour and backflow) · highways drainage · pumping station outlets · tidal and river outfalls.
Sizes and connection options
| Material | Sizes | Connection options |
|---|---|---|
| PVC | Standard PVC pipe sizes | Push-fit into standard PVC pipe with off-the-shelf couplings |
| Stainless steel 304 / 316 | DN75 to DN2000 | Insertion, wall-fixed, inline flexible coupling, single or double flanged |
| Custom | Made to order | Any size or end connection – send us your pipe details |
Full technical details are on the WaStop product page.
Get a WaStop quote
Tell us the pipe size, material and where the valve is going, and we’ll come back with a price the same working day. Prefer to talk? Call 01777 819734.
WaStop FAQs
Is this the genuine WaStop®?
Yes. AQUIKO is the UK’s sole importer of the WaStop, made by Wapro.
What sizes are available?
DN75 to DN2000 as standard, with bespoke sizes made to order.
Can it be fitted vertically?
Yes. The WaStop works at any angle, including vertical pipes with no headwall.
Does it need maintenance?
No routine maintenance. There are no moving parts, and the flow on opening flushes debris through.
How quickly can I get one?
Stocked sizes up to 600mm can be dispatched the same day. Larger and bespoke sizes – ask for the lead time when you request a quote.
How much does a WaStop cost?
It depends on size and material. Request a quote or call 01777 819734 for a same-day price.
Downloads
WaStop datasheet (PDF)Installation guide (PDF)
The WaStop range
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Our partners at Wapro can design and manufacture the WaStop in almost any configuration needed. Whether that be bespoke flanges, complex configurations or difficult to access sites. Should you require a more bespoke product please fill in the form below and we be back in touch. -
The WaStop Inline Non Return Valve has an ingenious design. Therefore, this design ensures you are provided with the best possible protection against backflow, flooding and odour control. Sizes are available from DN75 to DN2000 to fit most pipes. However, where more bespoke fittings are required contact AQUIKO and we will be able to assist. Due to the unique way in which it works with differential pressure it works autonomously. Therefore, there is no need for human interaction or electricity. In conclusion, without the need for constant maintenance, the WaStop just works!Genuine WaStop® from AQUIKO – the UK's sole WaStop® importer and official UK supplier. Stops backflow, flooding and odour. Works without power, low head loss, sizes DN75–DN2000.
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WaStop RSD is designed to be installed inline on the sewer lateral. Remove a section of pipe and install the WaStop RSD valve using slide couplings to seal in place. An access cover should be placed over the site of the valve installation. Installation: Sanitary sewer lateral inside or outside the home Size: DN110 (4”) -
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The WaReg Flow Regulator suits most applications and it is available from DN75 - DN400 for flow from 2 l/sec to 200 l/sec. WaReg models up to DN250 are tested for flow by us at Wapro to ensure the correct flow rate is set before delivery. The flow rate can be adjusted post-installation within a certain range.
