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Mobile Backflow Preventer B-FW in accordance with DIN 14346

Mobile Backflow Preventer B-FW in accordance with DIN 14346

Product Description

The mobile backflow preventer BFW112-65AC in accordance with DIN 14346 is connected to existing standpipes or pillar hydrants to draw water for fire Fighting from the pipeline network.

It prevents water from flowing back into the drinking water supply network as a result of back siphonage or back pressure, if the pressure in the supply network is lower than in the fire hose. In addition, pressure surges do not pass into the network, which helps to prevent burst pipes.

Technical Properties


TZW - declaration of conformity according to DIN 14346


Drinking water/quench water

Liquid category (EN1717) class 4
Mounting position horizontal
Max. media temperature 65 oC
Additional Descriptions
  • Protection against incorrect assembly through the unique, cleverly shaped handle
  • Minimum requirement of space in the fire truck due to the compact design
  • Easy maintenance and service through the use of only two internal parts. Maintenance and service can be carried out quickly and easily by the fire brigades themselves
  • Meets all requirements according to DIN 14346 - confirmed by the independent testing institute DVGWTechnologiezentrum Wasser
  • Due to the clean axial water outlet in the direction of the hose instead of the usual, sharp radial water outlet in the event of pressure fluctuations, the operator remains dry and ice formation at the water extraction point is minimized in winter
  • Low pressure drop, high flow
  • Handle, can be used as a hose coupling wrench
  • Low weight
  • Safe operation
  • Aluminium interior parts
  • Protects pipes against pressure surges
  • Easy maintenance
  • Stone trap on the inlet side
Maximum inlet pressure 16 bar
Weight 2,7 kg

Housing: Aluminium


Product Type
Standard version, Storz 75-B connection, PN16


Accessories and replacement parts


Image Description Product Type Downloads
Test kit for backflow preventer inclusive differential pressure gauge and connection hoses TKA112  
Differential pressure gauge DDM112-A  

Spare parts

Image Description Product Type Downloads
Seal ring set 0904183  
Piston incl seals 0904184  
Stone trap 0904185  
Dirt and fall protection 0904186  
Rotatable B-Storz coupling with handle grip and counter grip 0904198  
Outlet B-Storz Coupling 0904199