Products
FuranFlex, FuranFlex RWV, VentilFlex, VentilFlex RKV and RainFlex — technical data and applications of composite liners for chimneys, ventilation and rainwater drainage.
Composite is the professionally defined term for thermosetting resin of high hardness with fibre glass reinforcement. The once hardened resin will no longer soften back again and will not melt either. Its structure is similar to that of reinforced concrete. The difference is as much as having concrete instead of resin and steel reinforcement bars instead of fibre glass in place.
Products
FuranFlex®
Black liner for gas and oil heating
- delivered in flat, soft and flexible form
- quick installation without demolition
- available in any size, cross section and length
- smooth, corrosion resistant inner surface
- after installation the liner is of steel strength, light and air tight
FuranFlex® RWV
Red liner for wood and solid fuel heating
- delivered in flat, soft and flexible form
- quick installation without demolition
- available in any size, cross section and length
- smooth, corrosion resistant inner surface
- after installation the liner is of steel strength, light and air tight
VentilFlex®
Liner for traditional ventilation systems
- based on FuranFlex technology
- non-combustible, does not conduct fire
- available in any size, cross section and length
- smooth corrosion resistant inner surface
- after installation the liner is of steel strength, light and air tight
- does not emit harmful substances
VentilFlex® RKV
Liner for high temperature ventilation systems
- based on FuranFlex technology
- non-combustible, does not conduct fire
- available in any size, cross section and length
- smooth corrosion resistant inner surface
- after installation the liner is of steel strength, light and air tight
- does not emit harmful substances
RainFlex®
Liner for rain water drainage
- based on FuranFlex technology
- seals perfectly and is water tight
- after installation the liner is of steel strength, lighter than aluminum
Technical data
FuranFlex® / FuranFlex® RWV
| FuranFlex® | FuranFlex® RWV | |
|---|---|---|
| Application | Gas and oil heating | Wood heating |
| Reaction to fire | B – s2; d0 | A2 – s1 d0 |
| Roughness | 0.5 mm | 0.5 mm |
| Wall thickness | 3 mm | 3–5 mm |
| Range of diameter | 80 – 1000 mm | 80 – 1000 mm |
| Max. vertical length | 138 m | 100 m |
| Max. inclination | 30° | 30° |
| Abrasion / cleaning | Passed | Passed |
| Fuel | Gas, oil | Wood |
| Freeze/thaw resistance | Passed | Passed |
| Heat conductivity | 0.27 W/mK | 0.27 W/mK |
| Coefficient of heat expansion | 24 × 10⁻⁶ m/mK | 25 × 10⁻⁶ m/mK |
| Licence | ETA-12/0346 | according to national permits |
VentilFlex® / VentilFlex® RKV
| VentilFlex® | VentilFlex® RKV | |
|---|---|---|
| Traditional ventillation systems | High temperature ventillation systems | |
| Flow resistance (ζ) / Roughness (r) | Circular: ζ=0.43; r=0.2 mm — rectangular: ζ=0.59; r=0.4 mm | Circular: ζ=0.87; r=3 mm — rectangular: ζ=0.86; r=1.6 mm |
| Reaction to fire | B – s2 d0 | A2 – s1 d0 |
| Heat conductivity | 0.27 W/mK | 0.27 W/mK |
| Coefficient of heat expansion | 24 × 10⁻⁶ m/mK | 24 × 10⁻⁶ m/mK |
| Wall thickness | 3 mm | 5 mm |
| Air tightness (-1000/+2000 Pa) | Circular: D — rectangular: D | Circular: Ø < 300 mm: D; Ø > 325 mm: C — rectangular: D |
| Range of diameter | 80 – 800 mm | 80 – 800 mm |
| Max. vertical length | 100 m | 100 m |
| Max. inclination | 45° | 45° |
| Abrasion / cleaning | Passed | Passed |
| Licence | ETA-21/0300 | ETA-21/0300 |
RainFlex®
| RainFlex® | |
|---|---|
| Max. vertical length | 100 m |
| Wall thickness | 3 mm |
| Reaction to fire | B – s2; d0 |
| Range of diameter | 60 – 800 mm |
| Roughness | r = 0.0005 m |
| Freeze/thaw resistance | Passed |
Technical values are taken from the Kompozitor Kft. brochure (2023) — verify current ETA certificates before sending an offer.