Non-Return Flaps – Round and Rectangul

The design principle for our non-return flaps is a flange and a dome-shaped front. The dome-shaved front or flap is suspended in bronze bearings. The seal is a neoprene lip seal.


Types KR, KV og KU

Type KR:

Type KRFor concreting in as well as mounting on and in pipelines.

Type KV:

Type KVFor fitting on a vertical or sloping wall.

Type KU Repair Flap:

Type KU reparationsklapKU is used, where the existing non-return flap is ruined from corrosion or similar. The repair flap is fitted directly on the outside of the embedded flange of the existing non-return flap. This ensures a very quick and safe installation.


Non-return flap:
Rustfri stål AISI304 / AISI316 / SS2353. Søvandsbestandig Aluminium.

Neoprene lip seal. Standard size: Ø 300 to Ø 1,500.

Example 1

Kontraklap ku 110 til pumpestationNon-return flap Type KU 110 for pump stations
Inside measure: Ø 1,100 mm

Read more…

Example 2

Kontraklap kv til forrenseanlægNon-return flap Type KV for pre-treatment plants
Inside measure: Ø 400 mm

Read more…

Example 3

kontraklap kv099 FF specialNon-return flap Type KV099 – FF Special for fitting on old flange
Inside measure: Ø 990 mm

Read more…

Example 4

kontraklap ku 110 eksisterendeNon-return flap Type KU 110 for existing pressure pipes
Inside measure: Ø 600 mm

Read more…

Example 5

Kontraklap kvNon-return flap Type KV
Inside measure: Ø 400 – 1,400 mm

Read more…