WaBack Access

WaBack Access gives you instant and automatic protection against backflow and flooding. WaBack Access will work on differential pressure to ensure that in times of need the valve simply protects. No electricity or human interaction required, thus minimizing maintenance costs. The WaBack Access comes installed in an access chamber for easy access and maintenance. 

  • 100% sealed against backflow
  • Autonomous action with no moving or electrical parts
  • Minimal maintenance for real life scenarios
Access Waback

A peace of mind

WaBack non-return chamber ensure your basement remains dry during storm or other events which causes backflow. Basement flooding causes extensive damage and is costly to restore. Basements are often used as entertainment rooms or storage rooms with value equipment or keep-sake items stored. Having your basement flooded with a mixture of stormwater and sewer is not a pleasant experience.

Advantages of WaBack Access

  • Easy access from ground level
  • Ease of inspection – lift manhole cover and pull up the WaBack module
  • Delivered complete – inspection chamber and check valve in one
  • The WaBack module is completely open for flow during normal operating conditions
  • Allows ventilation in the pipe network
  • The valve closes as soon as backflow occurs Confidence – WaBack check valves have been used for over 20 years!
wapro-kerry-olsson-salesmanager

Does this sound interesting?

Contact Kerry Olsson for more information!
kerry.olsson@wapro.se
+46 (0)705 50 31 11
Technical specification

We at Wapro love protecting people and property from flooding and in line with our customer promise of common sense and simplicity, we have developed WaBack Access chamber to ensure our products fit real life applications.

WaBack Access Chamber is a complete inspection chamber Ø425mm with DN110mm connection. Inside the chamber is a WaBack check valve to prevent backflow. The ‘easy-remove’ backwater valve can be removed from ground level allowing easy rinsing and allows simple inspection. The WaBack module can be installed on sewage, drainage and surface water networks. Our WaBack Access is designed to be used in heavily polluted water and can therefore be used in both sewer and stormwater applications. When designing WaBack Access we chose to have a completely open flow area to ensure blockages won’t occur. Experience has led to further development of the WaBack Access. Our engineers have fine-tuned the mechanism to ensure decades of low maintenance protection and there is an optional alarm to inform the home owners that WaBack Access is protecting them from flooding.

Dimensions & Drawings
Installation
Documents

We at Wapro love protecting people and property from flooding and in line with our customer promise of common sense and simplicity, we have developed WaBack Access chamber to ensure our products fit real life applications. The following dimensions are available:

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 NPS [inch] Riser [inch] Drawing file name (imperial) Drawing file name (metric) Technical specification
WB110-WA425 4" PDF DWG PDF DWG PDF
WB110-WA1000 4'' PDF DWG PDF DWG PDF
WB200-WA1000 8'' PDF DWG PDF DWG PDF

Wapro Access Chamber prevents backflow. Wapro Access Chamber is delivered with WaStop® already installed, and 5' spindle extension. The chamber is constructed to fit shaft dimension 460mm. 

Install the WaAccess simply by placing it inline and attaching with flexible couplings or muffs. Wapro Access Chamber is delivered ready for use.

Maintenance

The only maintenance required is that the WaBack module be removed for inspection and rinsing if needed once a year.  After a suspected back-flow event it is recommended that the chamber be inspected and rinsed if required.  The O-ring in the PVC plate should be greased with silicone or similar every time the WaBack module is removed.

WaBack Installation 1
WaBack Installation 2
WaBack Installation 3
Maintenance WaBack Access

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 can be downloaded from the Dimensions and Technical Drawings tab. For your ease, you'll find other related information available for download below.

Certifications and Approvals

The WaBack non-return valve and WaBack Access has been thoroughly tested by both laboratories and councils in Sweden, Norway and Denmark. All tests show that all WaBack models are effective in stopping flooding caused by backflow and that it requires minimal maintenance. WaBack and WaBack Access are certified for use in storm water and sewage systems. The entire WaBack range is CE approved according to regulations for building products. WaBack check valves are for use as a non-return valve of Type 1 for back flow in sewage and drainage systems. SS-EN-13564-1:2002.

Product information

We designed the WaBack Access to provide instant, automatic protection against backflow. Our engineers designed WaBack Access to work on differential pressure to ensure that in times of need the valve simply protects. No electricity or human interaction required, and without constant maintenance WaBack Access Chamber protects against flooding caused by surcharged sewers.

With long life-cycle cost as part of our DNA we’ve ensured that WaBack Access is designed and constructed using materials designed to withstand the rigors of sewer applications. Each part of the WaBack Access is designed to tolerate chemicals usually found in sewer applications with ease. The only maintenance required for the Access Chamber is that the WaBack module is removed for inspection and rinsing once a year. After a suspected backflow event it is recommended that the chamber is inspected and rinsed if required. The O-ring in the PVC plate should be greased with silicone or similar every time the WaBack module is removed.

Advantages of WaBack Access

  • Easy access from ground level
  • Ease of inspection – lift manhole cover and pull up the WaBack module
  • Delivered complete – inspection chamber and check valve in one
  • The WaBack module is completely open for flow during normal operating conditions
  • Allows ventilation in the pipe network
  • The valve closes as soon as backflow occurs Confidence – WaBack check valves have been used for over 20 years!

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