OFR - Anti-pollution stoppersOFR - Anti-pollution stoppers

OFR - Anti-pollution stoppers

OFR anti-pollution stoppers are designed to rapidly and permanently plug pipes in the event of accidental pollution. The rapidity of this response can be attributed to a system of pneumatic stoppers which can be remotely inflated. The diameter of the pipe determines the pressure that the inflatable plugs will have to be inflated to.

Metallic supports are supplied for fixing the OFR pneumatic stoppers lengthwise inside the pipe. In addition to our OPAP stoppers range, OFR balloons are the ideal solution for plugging large pipes with a diameter of 1000 mm or greater.

Any accidental pollution is contained as the stoppers inflate and act as valves, allowing pollutants to be pumped or diverted to a retention pond. In this way, any risk of pollution can be eliminated. Stoppers are protected by a polyethylene bag prior to being inflated.

Once they have been inflated, the OFR anti-pollution stoppers will prevent any toxic liquids or firewater run-off entering the water systems.



  • Excellent chemical compatibility
  • Rapid inflation (manually or automatic)


  • Environmental protection
  • Remote inflation system
  • Secure closing system


  • Requires no major civil engineering work
  • Rapid and economical installation

Detailed information

  • Material: 550daN/5cm coated fabric with cold-glue assembly
  • Diameter: 770 > 2115 mm
  • Other shapes available on request (oval, elliptical …)
  • Inflation: by air
  • Temperature resistance: – 25°C to + 85°C
  • Inflation pressure: max. 0.5 bar
  • Accessories:
    • 1 x 3/4″ or 1″1/2 valve mounted on the central shaft
    • 10 protective polyethylene bags
  • Red painted stainless steel control unit, locked by key or lead seal

Technical informations

OFR 780 770 805 950 0.5 0.2
OFR 870 850 895 1100 0.5 0.2
OFR 978 945 995 1200 0.4 0.2
OFR 1075 1050 1105 1300 0.4 0.1
OFR 1170 1170 1230 1400 0.4 0.1
OFR 1265 1235 1300 1450 0.3 0.1
OFR 1365 1375 1450 1500 0.3 0.1
OFR 1465 1450 1530 1600 0.3 0.09
OFR 1640 1535 1615 1800 0.3 0.08
OFR 1830 1805 1910 2000 0.2 0.07
OFR 2000 2000 2115 2200 0.2 0.07

You can not find your dimensions

Our design department employs the best project leaders and designers and will be pleased to develop and create a tailor-made product specially for your unique project.


Composition / Advice

Pre-installation tips
Clean the water pipe thoroughly before installing the stopper. It is essential that the pipe is not in use when installing the stopper.
Installation tips
Cover the stopper with the protective sleeve that is supplied and secure it with the cable ties. Install the first mounting accessory followed by the second after the OFR has been inserted. No inflatable part
Maintenance tips
Regularly inspect the condition of the pipe and check the OFR device annually. Ensure that the cover is removed before visually inspecting the device or performing an inflation test. Ensure that the cover is still intact if the stopper has been deployed in an emergency situation; replace it if it is torn.

Standards / regulations

1 year against all manufacturing defects


Fact Sheets / Business Guides
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Remote control unit
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