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Building installationsCUSMART®

Water Supply, Heating, Floor Heating & Cooling
CUSMART® flexible copper tubes are unsurpassed in every technical aspect, offering great installation ease. Their exceptional flexibility allows cold bending and even manual shaping without “memory” effects. The use of CUSMART® flexible copper tubes in plumbing, cuts down on installation time and cost, offering uncompromised security.
CUSMART® flexible copper tubes are patented flexible copper tubes with a special compound coating. They preserve their physical and technical properties throughout their lifetime and are covered by a 20-year manufacturer's guarantee.
CUSMART® superiority in every aspect
- Long lifetime
- A special process that ensures hygiene
- High pressure and temperature fluctuation resistance
- Unique flexibility and final shape stability
- Exceptional thermal conductivity
- Minimum thermal expansion
- Cost-effective system
- Impermeability - 100% Oxygen Barrier
- Recyclable product
- UV resistance and maximum corrosion resistance
- Significant energy savings with industrial insulation
Product Description
CUSMART® flexible copper tubes are coated with a special white colored compound for enhanced endurance at temperatures up to 95 oC.
Quality Marks
RAL, NSF*.
* Only products bearing the NSF Mark on the product, product packaging, and/or documentation shipped with the product are certified.
Mechanical Properties
Temper | Minimum Tensile strength Rm (MPa) | Min elongation, A% |
---|---|---|
Soft | 220 | 40 |
Technical Properties of CUSMART® Copper Tubes
NOMINAL DIMENSIONS (mm) | OUTSIDE DIAMETER – (od)(mm) | WALL THICKNESS (mm) | INSIDE DIAMETER (id)(mm) | INSIDE DIAMETER CROSS-SECTION (cm2) | WATER VOLUME (l/m) | MAXIMUM WORKING TEMPERATURE (oC) | THERMAL CONDUCTIVITY COEFFIENT W/(m*OK) | MINIMUM BENDING RADIUS WITH BENDING TOOL (mm) | MINIMUM BENDING RADIUS WITH EXTERNAL BENDING SPRING=4x od(mm) | MINIMUM BENDING RADIUS MANUAL =6x od(mm) | PACKAGING STRAIGHT LENGTHS | PACKAGING COILS (m) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
14Χ2 | 14 | 2 | 10 | 0,785 | 0,0785 | 95 | 0,40 | 39 | 56 | 84 | 3 | 100/ 50 |
16Χ2 | 16 | 2 | 12 | 1,131 | 0,1131 | 95 | 0,40 | 45 | 64 | 96 | 3 | 100/ 50 |
18Χ2 | 18 | 2 | 14 | 1,5 | 0,154 | 95 | 0,40 | 53 | 72 | 108 | 3 | 100/ 50 |
20Χ2 | 20 | 2 | 16 | 2,011 | 0,2011 | 95 | 0,40 | 64 | 80 | 120 | 3 | 100/ 50 |
26Χ3 | 26 | 3 | 20 | 3,142 | 0,3142 | 95 | 0,40 | 89 | 104 | 156 | 3 | 25/ 50 |
32Χ3 | 32 | 3 | 26 | 5,309 | 0,5309 | 95 | 0,40 | 128 | 128 | 192 | 3 | 25 |
Different dimensions and lengths are available upon request.
Technical Properties of Industrial Insulation CUSMART® Copper Tubes
NOMINAL DIMENSION (mm) | TOTAL OUTSIDE DIAMETER (INSULATION THICKNESS: 9 mm) | PACKAGING - COIL (m) |
---|---|---|
14X2 | 32 | 100/ 50 |
16X2 | 34 | 100/ 50 |
18X2 | 36 | 100/ 50 |
20X2 | 38 | 100/ 50 |
26X3 | 44 | 25/ 50 |
32X3 | 50 | 25 |
Significant and Uninterrupted Energy Saving.
CUSMART® flexible tubes with external industrial insulation are suitable for all heating and hot water supply plumbing networks inside and outside buildings. The insulation is a cross-linked polyethylene (PE-X) foam structured in closed type microcells. Energy saving is a result of the spectacular reduction of temperature loss to over 50% compared to similar networks without insulation.
The CUSMART® all-inclusive flexible copper tube system includes a full range of CUSMART FITTINGS (press and compression fittings), as well as tools, ensuring reliable results in every application.
Insulation Technical Properties
MATERIAL | PE-X or PE foam |
DENSITY ACCORDING TO DIN 53420 ASTM D 1667 | 30-33 Kg/m3 |
THERMAL CONDUCTIVITY COEFFICIENT (λ) ACCORDING TO ASTM C 335 | 0,039 W/m.K
|
VAPOUR-WATER DIFFUSSION RESISTANCE COEFFICIENT (μ) ACCORDING TO ISO 12572 | > 9.000
|
WORKING TEMPERATURE | -80oC to +110oC (+90oC for PE foam) |
FIRE RESISTANCE | EN 13501–1, Class B or Class E, DIN 4102, B2, BS 476, NF P 92 501-M1 |
RESISTANCE TO CHEMICAL AGENTS ACC. TO ASTM 543-56 T | Very good |
SOUND ABSORPTION ACC. TO DIN 4109 300-2500Hz | ~60% |
DIMENSIONAL STABILITY ACCORDING TO ISO 2796 FOR TEMPERATURES UP TO 1000C | <5% |
Values are listed, as obtained under standard laboratory conditions and may be amended, without prior notice.
See also

Water Supply, Heating Air-conditioning, Refrigeration, Solar Systems, Industrial Networks