WaStop® Inline Check Valve

WaStop protects people and property from flooding. Replace failing tide gates and duckbills with a WaStop inline check valve for instant protection.

  • Fast Delivery - Next day shipping on DN75 - DN900 valves!
  • Low Headloss stops upstream ponding
  • Online shop drawings and technical specification
  • Sand and debris? WaStop's pulsating flow helps!
Wapro-Wastop-backflow-flood-protection-regulation-ws-230-cutthrough-black

Ingeniously simple

WaStop’s ingenious function provides you with the best possible protection against flooding, odor control and backflow.
A wide size range makes it available to fit most types of pipes from DN75-DN1800 and it is also available in an Access chamber for easy access from ground level.
Working on differential pressure the WaStop functions autonomously, without human interaction, without electricity and without constant maintenance. It just works.

Advantages of WaStop

WaStop exhibits the lowest headloss on the market, 100% backflow prevention and a unique pulsating flow that keeps pipes both upstream and downstream cleaner which reduces maintenance costs.

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Technical Information

We at Wapro know that there is a wide range of pipes available on the market, and that these pipes aren’t always perfect. We designed this seal to not only create the perfect fit, but also to ensure quick easy installation. Time is money.

For the residential market we have designed a range of valves for protecting memories. Please refer to the WaStop Residential pages for more information.

WaStop is also available in an Access Chamber. The Access chamber has a pre-installed WaStop valve. The WaStop module is removable from ground level for easy maintenance. Available in DN110, DN125 and DN160mm. Please refer to drawings for more information.

The following technical information relating to WaStop can be found on the tabs below.

  • Drawings
  • Technical Specifications
  • Installation Instructions
  • Certifications
Wapro-Wastop-backflow-flood-protection-dimensions
Dimensions & Drawings
Installation
Documents

To ensure the valve we provide you with fits perfectly and protects 100% we’re engineered the guess work out of it. Keeping in line with our customer promise of common sense and simplicity, we have developed a standard range of WaStop from 75mm - 1800mm. On top of this we have a Superior Fit Seal to ensure there is no leakage between the existing pipe and the WaStop Inline Check Valve.

Modell RSK Nr.

Kapacitet Q (1,2mvp)

Utlopp D b min Dk min Dm min Inlopp a c e
   

[I/s]

[mm]

[mm]

[mm]

[mm]

[mm]

[mm]

[mm]

[mm]

FV110-0,9

4018055

0,9

110 250 1000 400 40 320 360 170

FV110-1,0

4018056

1,0

110 250

1000

400

40

320

360

170

FV1101,15

4018057

1,15 110 250

1000

400

40

320

360

170

FV1101,35

4018058

1,35 110 350

1000

400

40

320

360

170

FV110-1,5

4018059

1,5 110 350

1000

400

50

375

425

195

FV110-1,8

4018060

1,8 110 350

1000

400

50

375

425

195

FV110-2,0

4018061

2,0 110 400

1000

400

50

375 425

195

FV110-2,3

4018062

2,3 110 400

1000

500

65

460

545

220

FV110-2,5

4018063

2,5 110 400

1000

500

65

460

545

220

FV160-3,0

4018064

3,0 160 500

1000

500

65

460

545

258

FV160-3,5

4018065

3,5 160 420

1000

600

80

550

625

310

FV160-4,0

4018066

4,0 160 420

1000

500

80

400

485

240

FV160-4,5

4018067

4,5 160 420

1000

500

80

400

485

240

FV160-5,0

4018068

5,0 160 420

1000

500

80

400

485

240

Dimensions

Article number DN [mm] Rsk OD [mm] Drawing file name (imperial) Drawing file name (metric) Technical specification
WS97-S 110 4560992 97 PDF DWG PDF DWG PDF
WS101-S 110 4560993 100 PDF DWG PDF DWG PDF
WS116-S 125 4560994 115 PDF DWG PDF DWG PDF
WS146-S 150 4560995 144,5 PDF DWG PDF DWG PDF
WS183-S 200 4560996 181 PDF DWG PDF DWG PDF
WS193-S 200 4560997 191 PDF DWG PDF DWG PDF
WS215-S 225 4561001 215 PDF DWG PDF DWG PDF
WS230-S 250 4561002 230 PDF DWG PDF DWG PDF
WS240-S 250 4561003 240 PDF DWG PDF DWG PDF
WS250PE-I-S 250 236 PDF DWG PDF DWG PDF
WS250PE-S 250 250 PDF DWG PDF DWG PDF
WS265-S 270 4561004 265 PDF DWG PDF DWG PDF
WS290-S 300 4561006 290 PDF DWG PDF DWG PDF
WS315PE-I-S 315 295 PDF DWG PDF DWG PDF
WS315PE-S 315 315 PDF DWG PDF DWG PDF
WS340-S 350 4561007 340 PDF DWG PDF DWG PDF
WS370-S 400 4561008 370 PDF DWG PDF DWG PDF
WS390-S 400 4561009 390 PDF DWG PDF DWG PDF
WS440-S 450 443 PDF DWG PDF DWG PDF
WS490-S 500 490 PDF DWG PDF DWG PDF
WS590-S 600 587 PDF DWG PDF DWG PDF
WS690-S 700 690 PDF DWG PDF DWG PDF
WS750-S 750 750 PDF DWG PDF DWG PDF
WS790-S 800 790 PDF DWG PDF DWG PDF
WS885-S 900 885 PDF DWG PDF DWG PDF
WS985-S 1000 985 PDF DWG PDF DWG PDF
WS1040-S 1050 1040 PDF DWG PDF DWG PDF
WS1185-S 1200 1185 PDF DWG PDF DWG PDF
WS1385-S 1400 1385 PDF DWG PDF DWG PDF
WS1485-S 1500 1485 PDF DWG PDF DWG PDF
WS1585-S 1600 1585 PDF DWG PDF DWG PDF
WS1785-S 1800 1785 PDF DWG PDF DWG PDF

WaStop is extremely adaptable in regards to installation options. It can be installed from horizontal to vertical and in both cases can be installed for use in both directions. Joint connections are available for purchase upon request.

Common installations include
• Inlets and outlets
• Installation in an existing pipe
• Pump stations
• In manholes and chambers

We at Wapro believe in enabling. By being an open organization we learn from, and share with, our customers. Below you’ll find that there is a wealth of information in relation to not only our products, but also other useful and interesting information to help you in your role. If you require any further information please don't hesitate call us. We’re here to help you stop flooding

Technical Documentation

Technical drawings and specifications can be downloaded for each dimension under the tab for Dimensions. Please contact us if you require any additional information.

Approvals and Certifications

A rigorous testing procedure is undertaken at Wapro to ensure our valves meet our exacting standards. Our valves tested to appropriate standards in our target markets at third party organizations such as Utah State University Hydraulics Lab, Danish Technological Institute.  Kiwa Sverige AB on an annual basis.

CE-approved models type 0 (DN80-200mm) are tested according to SS-EN 13564-2:2002.

WaStop also meets the requirements according SS-EN 13564-1:2002 and quality assurance according SS-EN 13564-3:2004. Other dimensions are tested according to the same standard and meets the same requirements and quality assurance.

WaStop is patented in the EU, USA and other countries.

Tests

Read more about our tests of this product.

Product information

We at Wapro know that any solution for flood prevention, or odor control needs to function. Simply, effectively. That’s why, when we invented the WaStop inline check valve in 2000 we had one thought in mind. Instant automatic protection. Working on differential pressure the WaStop functions autonomously, without human interaction, without electricity, without constant maintenance – it just works.

WaStop is available to fit most types of pipes from DN75 to DN1800 and is also available in an Access chamber for easy access from ground level.

WaStop inline check valve excels in many areas. WaStop exhibits the lowest headloss on the market, 100% backflow prevention and a unique pulsating flow that keeps pipes both upstream and downstream cleaner which reduces maintenance costs substantially.

Click below to read more about Headloss, Backflow, Pulsating Flow and Installation.

WaStop inline check valve excels in many areas. WaStop exhibits the lowest headloss on the market, 100% backflow prevention and a unique pulsating flow that keeps pipes both upstream and downstream cleaner which reduces maintenance costs substantially.

Please click on the links below to understand how each of the features of WaStop can be an advantage for your stormwater or sewer network.

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