• Peak temperature | +95 °C |
• Seasonal op temp | +85 °C |
• PUR thermal cond | 0.021 W/mK |
• Operating Pmax | 10 bar |
• Configuration | single or duo pipe |
FibreFlex is the new generation of flexible pre-insulated bonded pipes for low temperatures district heating applications with plastic reinforced core pipes able to perform up to 95° peak temperature and 10 bar pressure.
FibreFlex service pipes have a multilayer pipe wall construction, comprising a cross-linked polyethylene PEX-a inner layer, a high modulus aramid fibre mesh reinforcement layer, an oxygen barrier and additional high temperature resistant thermoplastic adhesive layers used to bond the individual layers to form the composite pipe structure.
FibreFlex pipes are continuously insulated during the manufacturing process using a CFC free bonded polyurethane foam with an outstanding thermal conductivity value of 0.021 W/mK. The product range finally includes two insulation classes with different wall thickness of polyurethane foam in order to comply to any insulation requirement due to different outside temperature conditions.
FibreFlex is the best solution for:
These longer continuous flexible pipe lengths, combined with an easy to install non-welded fittings solution, enables FibreFlex Pro pipes to be installed in long runs using narrow trenching techniques, offering significant on-site installation time and cost savings.
FibreFlex MONO |
Service Pipe D x s [mm] |
Casing Pipe OD [mm] |
Coil LMAX [m] |
---|---|---|---|
32/91 | 32.0 x 2.9 | 91 | 570 |
40/111 | 40.0 x 3.7 | 111 | 410 |
50/111 | 49.4 x 3.6 | 111 | 410 |
63/126 | 58.5 x 4.0 | 126 | 300 |
75/142 | 69.5 x 4.6 | 142 | 220 (440*) |
90/162 | 84.0 x 6.0 | 162 | 150 (300*) |
110/182 | 101.0 x 6.5 | 182 | 86 (170*) |
125/202 | 116.0 x 6.8 | 202 | 80 (160*) |
140/202 | 127.0 x 7.1 | 202 | 80 (160*) |
160/225 | 144.0 x 7.5 | 225 | 75 (150*) |
* Maxicoil available on request (width 2.4 m)
FibreFlex DUO |
Service Pipe D x s [mm] |
Casing Pipe OD [mm] |
Coil LMAX [m] |
---|---|---|---|
25+25/111 | 25.0 x 2.2 | 111 | 410 |
32+32/126 | 32.0 x 2.5 | 126 | 300 |
40+40/142 | 40.0 x 2.8 | 142 | 220 (440*) |
50+50/162 | 49.4 x 3.6 | 162 | 150 (300*) |
63+63/182 | 58.5 x 4.0 | 126 | 86 (170*) |
75+75/202 | 69.5 x 4.6 | 142 | 80 (160*) |
90+90/225 | 84.0 x 6.0 | 162 | 80 (160*) |
* Maxicoil available on request (width 2.4 m)
The jointing of flexyble preinsulated reinforced pipes FibreFlex Pro is made by mechanical axial compression couplers to be installed by means of hydraulic clamps.
Those joints are made of 3 pieces:
– Internal steel male insert
– Polymer sleeve for high temperatures
– External steel ring
FibreFlex Pro is quick and easy to join using the abovementioned specially designed compression fittings, incorporating a unique polymer sleeve, which is inserted between the fitting’s outer sleeve and the service pipe. The steel insert is then easily fitted inside the pipe without any need for the pipe end to be expanded before the connection. This provides a robust and very secure joint.
The insulation of the joint is finally made with high density polyethylene or even better crosslinked polythylene shrinkable muffs as for the traditional steel preinsulated pipes.
Flexyble preinsulated reinforced pipes FibreFlex Pro have their own full range of steel preinsulated fittings with already welded steel male adaptor in order to avoid any further welding on worksite for a safer and faster installation.
Branch TEE pieces can be manufactured with different outlets:
– 45°, plain or parallel
– equal or reduced
To conclude, wherever it is not possible to bend the flexy pipes at required radius a complete range of preinsulated bends with both steel or plastic service pipe is available.
ZG 200-2 | Flexible pre-insulated pipe systems for district heating networks with bonded thermoplastic reinforced service pipe |
EN 15632-2 | District heating pipes – Pre-insulated flexible pipe systems – Part 2: Bonded plastic service pipes – Requirements and test methods |