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Valsir S.p.a
Waste and water
supply systems, underfloor heating system
and flush cisterns

logo-collarwings

the new passive fire protection system.

Operating principle

In the event of fire the intumescent material contained in the collar expands forming a “plug” thus cutting off the fire and preventing gas and fumes from spreading.

The special closure elements (reinforcing flaps) increase reactivity and efficiency of the system by completely squeezing the plastic pipe during the melting phase.

Phase 1

During the first phase of the fire the plastic pipe melts and the intumescent inserts expand. The first is more reactive and acts immediately, the second, which expands at a higher temperature results in a high performance over time.

Phase 2

During the next few minutes the intumescent elements of the collar occupy the entire section left free by the plastic pipe that is in the process of melting. The intumescent inserts expand and act on the closure elements (reinforcing flaps) bringing them to the position of exposure to the fire.

Phase 3

The intumescent inserts shut off the hole entirely in a sufficient period of time so that the fire does not spread to other areas.
During this phase the closure elements (reinforcing flaps) are completely oriented and, as well as acting as a “container” for the expanded intumescent material, create another metal barrier against the fire.

The innovative design methods and attentive research activity have enabled the Collarwings collars to reach the EI240 classification,

both in wall, installations and in the slabs for different types of pipes and with a range of sizes from Ø 32 mm to Ø 160 mm.


Support

Valsir provides complete support both during the planning phase and on site, thanks to a first-class technical office made up of a team of highly experienced engineers, capable of dealing with the most complex system requirements.

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