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K-FLEX SRC and K-FLEX SRC ECO

The world today is increasingly aware of the need to meet fire safety requirements and reduce energy consumption, and the new K-FLEX SRC and K-FLEX SRC ECO sheets have been developed specifically with these criteria in mind. K-FLEX SRC, in conjunction with K-FLEX ST tubes, complies with the current European testing on fire classification of construction products and building components, and offers design, engineers and installers a complete range of solutions for the insulation of pipes, ducting and technical systems, capable of reducing the emission of smoke. K-FLEX SRC sheet works by combining the features of closed cell elastomeric foam and the performance of an aluminised protective outer jacket. The elastomeric foam ensures good thermal performance like low thermal conductivity and high resistance to water vapour diffusion. In case of fire, the outer jacket protects against fire by retarding its onset, slowing the propagation of the flame and as a result, the emission of smoke. The special halogen-free elastomeric foam compound of the new K-FLEX ECO SRC sheets ensure that, in case of fire, any smoke are free of hazardous hydrohalic acids and organochlorine compounds. K-FLEX ECO SRC sheets further increase the level of safety in case of fire, making them an ideal solution to protect personal safety.

  K-FLEX SRC
  K-FLEX SRC ECO

More information? 
K-FLEX SRC Brochure

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Thermal conductivity (λ factor)

Heat flow which, in static conditions, crosses the surface of a homogenous material. Thermal conductivity is a measurement of the ability of a material to transmit heat. As shown in the diagram below, the lower the value λ of a material, the better the thermal insulation.

The Chart compares Insulation features of different materials

Aluminium λ = 200 W/mk
Water λ = 0.58 W/mk
Wood λ = 0.12 W/mk
Elastomer λ = 0.033* W/mk
  * at 0°C for K-FLEX ST product ≤ 25 mm
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Flexibility and ease of use

The ease of installation of our materials sets them apart from other products on the market. Due to its flexibility and elasticity, K-Flex elastomeric insulation is ideal for a variety of applications, such as: air conditioning ducts, pipes, elbows, valves, flanges, reservoirs, etc. Professionals will also appreciate its extreme cleanliness because it does not leave traces and residues during installation. Even restoration and maintenance work can be carried out with ease and can achieve a saving in installation time that is unique compared to other materials.

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Fire Behaviour

All our products are certified and supervised at major international laboratories which guarantee that they are self-extinguishing in case of fire. Years of experience and international presence have allowed us to surpass even the strictest standards: BS 476, DIN 4102, Euroclass, Italian Class 1, Spanish M1, French NF-FEU, American ASTM and these are just some of over 1500 certifications that our materials have achieved.

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Non-toxic products

Many insulation materials are porous or fibrous. In these types of materials the presence of moisture and organic matter allow the growth of bacteria, mould and fungi. Our products are resistant to this and thus contribute to the quality of the air that we breathe. We do our best to ensure that our products do not emit VOCs (volatile organic compounds) to further protect air quality by changing the ingredients and production process and ensuring that the products are from certified suppliers. In the USA our products are certified GREENGUARD by the AQS (Air Quality Science) Laboratories. This prestigious qualification in the “GREENGUARD for Children & Schools” programme ensures that the product does not emit toxic substances. In Europe there is a similar certification from the German institute EPA which has approved our product as completely harmless with regard to the emission of airborne substances. Elastomeric insulation is not made of fibrous material, and does not release harmful particles into the air. This,therefore, is regarded as an ideal product for use in public places such as schools and hospitals. It is also used in clean rooms: for the production of microchips where the minimum of dust and the absence of pollutants are a necessity for efficient production processes.

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Resistant to water vapour diffusion (μ factor)

Our materials are resistant to water vapour diffusion. The higher the resistance to the penetration of water vapour, (denoted by Mu (μ)), the greater the consistency of performance over a period of time. This benefit is significant when insulating cold items, where insulation thicknesses are chosen so as to achieve a surface temperature above the ambient dewpoint. Ambient humidity will try to breach the insulation in order to achieve equilibrium conditions. Because the thermal conductivity of water is 0,58 W / (mK), and therefore about 16 times higher than our insulation, any absorption of water vapour could reduce the insulation efficiency. The formation of condensation on the surface of tubing and ducting is the main cause of corrosion beneath insulation which quickly leads to damage of pipes and ducts.

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Closed Cell Products

Thermal insulating closed cell products have many advantages over the traditional open cell and products made of wool or fibreglass: 

- They have a better thermal conductivity, because the air inside the closed cells has a lower mobility than that produced in open cells therefore the convective component of heat exchange is considerably lower.

- Vapour diffusion into the insulation is much lower, thus the thermal conductivity will be guaranteed for longer, even without using protective coatings.

- The mechanical properties are better.

- They promote a natural inhibition of bacterial growth, because bacteria cannot spread within the structure.

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