Backflow Trap

Backflow Trap RW-A-RSK

Simple solution for the impoundage and release of overflow water while simultaneously preventing the entry of downstream water

operational area | usage

  • Flow-dividing structures
  • Stormwater overflow tank (RÜB)
  • Pumping stations
  • Watercourse inlets
  • Industrial facilities

product description

RW-A-RSK are operationally reliable solutions for resistance-free passage of the maximum overflow water from a structure and reliable prevention of the entry of downstream water into the structure. In the case of an overflow event the RW-A- RSK is overflowed in the floating configuration or rather the RW-A-RSK opens as the result of the build up of pressure. At very low pressure technical emptying of residual water is necessary to minimise deposits and odours. Inflowing, pressing downstream water acts via the flap construction on the sealant materials of the frame construction and thus reliably prevents the penetration of downstream water into the structure.

constructional features

RW-A-RSK are designs with optimised materials and functions made of diverse grades of stainless steel or plastic or GRP. The sizes and types correspond to the technical conditions of the project and the specifications of the client. Any necessary emptying of residual water in the sewers is implemented in the flap body or better in an optimum position in the frame. Floating types as special solutions are also worth mentioning. The RW-A-RSK are therefore designed, produced and delivered for a specific project, and are installed ready for operation.


  • High operational reliability
  • Optimised investment and operating costs due to simple design and function
  • Effective protection against unauthorised access
  • Good operating and maintenance conditions


Datasheet Backflow Trap

contact person

Holger Wünsch
Product manager

With the usage of this website you agree to the usage cookies. Further information you will get in our general business terms and the data protection regulations