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BSM Adapter

Connection of uPVC drainage and sewer pipes to concrete sockets, clay sockets and chamber sockets

The Funke BSM-Adapter®, available in diameters DN 250 to DN 500, is a system to enable connection of uPVC drainage and sewer pipes to concrete pipe sockets, clay pipe sockets and concrete chamber sockets. The Funke BSM-Adapter® enables level-invert transitions from pipe to chamber as well as from pipe to pipe sockets made of rigid materials such as clay and concrete.

The Funke BSM-Adapter® consists of a body encircled by a row of toggles, which are contracted with the help of a robust stainless steel clamp – the seal encircling the device expands and is compressed into the clay or concrete socket. The eccentric arrangement of the toggles ensures that the transition is always at level-invert. The adapter’s extremely large clamping range, which is available in nominal diameters of DN 250 to DN 500, also means that this system can be used for many different applications.

The advantages in practice:

  • Connection from pipe to chamber as well as from pipes to pipe sockets made of rigid materials (e.g. clay and concrete)
  • Level-invert transitions

Technical Data

Product name: Funke BSM-Adapter®
Nominal diameter: DN 250 – 500
Socket-Internal-Diameter (Clamping Range):
  • DN 250: Clamping Range 315 – 350 mm
  • DN 300: Clamping Range 375 – 405 mm
  • DN 400: Clamping Range 480 – 520 mm
  • DN 500: Clamping Range 580 – 645 mm
Colour: Grey / red / black
Material: PVC-U (unplasticised)
Installation guideline: According to the manufacturer’s instructions
Area of use:
  • Level-invert transition to concrete or clay
  • Pipe and chamber sockets
  • Foul sewer pipelines
  • Combined sewer pipelines
  • Storm sewer pipelines
  • Traffic route construction
Special characteristics:
  • Fits in any socket whose internal diameter is within the clamping range
  • No need to cut off the (old) pipe socket
  • Level-invert channel between Funke BSM Adapter and chamber channel/(old) pipe
  • Resistant to shear forces
  • Resistance range: pH 2-12
  • Recyclable thanks to material purity




BSM Adapter Brochure

For more information or to purchase this product, please contact our Sales Office on 01722 717708 or our Technical Sales Manager, Dave Williams:

 07392 080611

 01722 717708