The inner surface of the copper tube is bright, clean and dry, essential characteristics of this product category normally available on the market for industrial use. This particularity allows for the achievement of an integrated system with the terminal units of the plant. The particular internal factory cleanliness of WICU® Clim material is safeguarded by fitting terminal sealing stoppers at production.
Polyethylene closed cell expanded foam with average water vapour diffusion resistance factor “μ” equal to 10000. The insulating sheath is manufactured under full compliance to European Regulation EEC/EU 2037/2000 which enforces the use of expanded foam insulation sheaths devoid of CFCs and HCFCs which are harmful to health and the environment and have class 1 fire resistance compliant to Italian Min. Decree 26/06/84.
The outer polyethylene film has a darker pigment than the traditional white to counter the PE crystallisation process. In addition, normal anti-UV additives tend to degrade the flame retardant treatment necessary for the product. In order to avoid this drawback, the WICU ® Clim sheath contains an environmentally friendly halogen-free flame retardant that does not counteract the anti-UV action.
Tests conducted according to ASTM G-155 (accelerated ageing) confirm that WICU ® Clim is suitable for areas with high annual solar radiation. At the end of the exposure test, the sample did not show any signs of degradation (see photo).
Thermal conductivity: ≤0,040 W/m °C.
Average value of the water vapour diffusion resistance factor “μ” =10000.
Average sheath density: 30 kg/m³.
Free of ammonia residues.
Excellent resistance to external chemical agents.
Class 1 non-flamable (Italian Min. Decree 26/06/84).
Free of CFCs and HCFCs (Reg. EEC/EU 2037/2000).
Colouring of the outer film “Silver grey”.
Superior UV resistance.
Halogen-free flame retardant.