Ingeniously simple
WaStop is a fully automated solution that works without any human interaction at all.
Thanks to the product’s use of differential pressure, neither electricity nor human intervention are necessary for continuous operation.
The solution is available as standard for pipe NPS 3" - NPS 84"
The solution protects against:
- Flooding caused by backflow
- Odor
- Pests
Some advantages of the solution:
- Works immediately and automatically
- Features the lowest pressure loss on the market
- Features a high level of resistance to external factors (temperature change, waves, chemicals, stones, gravel etc.)
- Features a pulsating flow, to prevent the accumulation of debris
- Tried-and-tested – has been on the market for more than 20 years
- Has few moving parts – practically maintenance-free
The WaStop is also available with an access chamber, allowing easy access from ground level. The product is then called WaStop Access.
We now include CO2 information in everything from quotes to invoices. This means that you can easily see the amount of CO2 emissions associated with our products. By doing this, we are working together to help minimize greenhouse gas emissions.
ENVIRONMENTAL BENEFITS THAT WASTOP CONTRIBUTES TO:
- Minimizing Environmental Impact: Requires no electricity or continuous maintenance, which reduces the carbon footprint.
- Preventing Pollution: Effective flood protection helps to safeguard local waterways from contamination.
- Long Lifespan: With few moving parts and high resistance to external factors such as temperature fluctuations and chemicals, WaStop offers a durable solution with minimal maintenance.
Wapro's solutions require minimal maintenance, have a low life-cycle cost and are simple to install. The delivery time for all products is short, and stock items are sent immediately.
Animations
Feel free to watch our videos below to get an idea of how the WaStop is installed.
For more videos, please watch our YouTube channel
Videos
Models
WaStop® Inline Check valveHere you can find specific models, read more about the models and download technical information and drawings in different formats. Click on the padlock, download and you get everything you need in one package.

WaStop® Inline Check valve
WS97
WaStop® Inline Check valve
WS101
WaStop® Inline Check valve
WS116
WaStop® Inline Check valve
WS146
WaStop® Inline Check valve
WS183
WaStop® Inline Check valve
WS193
WaStop® Inline Check valve
WS215
WaStop® Inline Check valve
WS230
WaStop® Inline Check valve
WS240
WaStop® Inline Check valve
WS265
WaStop® Inline Check valve
WS283
WaStop® Inline Check valve
WS290
WaStop® Inline Check valve
WS340
WaStop® Inline Check valve
WS370
WaStop® Inline Check valve
WS390
WaStop® Inline Check valve
WS440
WaStop® Inline Check valve
WS490
WaStop® Inline Check valve
WS515
WaStop® Inline Check valve
WS590
WaStop® Inline Check valve
WS690
WaStop® Inline Check valve
WS750
WaStop® Inline Check valve
WS790
WaStop® Inline Check valve
WS885
WaStop® Inline Check valve
WS985-FL
WaStop® Inline Check valve
WS1040-FL
WaStop® Inline Check valve
WS1185-FL
WaStop® Inline Check valve
WS1335-FL
WaStop® Inline Check valve
WS1385-FL
WaStop® Inline Check valve
WS1485-FL
WaStop® Inline Check valve
WS1585-FL
WaStop® Inline Check valve
WS1785-FL
WaStop® Inline Check valve
WS1980-FL