INFLEX HD DUO – PREINSULATED PIPES FOR DISTRICT HEATING
Type: RIW
Material: polyethylene mod. (HDPE-mod.)
Water vapour permeability: minimum
Mechanical strength: 500N
Impact resistance: 2,0kg/100mm
Chemical resistance: excellent
UV resistance: 2 years
Application:
Inflex HD duo is designed for transporting liquids in heating, sanitary installations and district heating systems.
Pipe consists of two carrier pipes (flow and return). They are insulated with flexible EPE foam and enclosed in an external HDPE corrugated pipe. A multilayer layer of elastic foam provides excellent thermal insulation over a wide temperature range. Insulation’s closed-cell structure prevents water absorption and water vapour permeability, and is resistant to mechanical deformation.
The system with internal corrugated pipe permits safe expansion and contraction of the carrier pipe, reducing the risk of uncontrolled leakage caused by inner pipe abrasion. It allows easy replacement of carrier pipes trough pulling it out and inserting a new one without the need to chisel it out of walls, floors or ground.
These pipes have high mechanical strength (500 N), high-impact resistance and flexibility which makes them easy to install. Pipes are recommended for outdoor use in grounds and in areas where special mechanical protection is required. Pipes are available in 6 meter straight lengths and in coils of 25, 50 and 100 meters.
Available diameters
Carrier pipe diameter (mm) | Pipe symbol | Outside diameter (mm) | Heat emission W/m | Minimum bending radius (mm) |
---|---|---|---|---|
2x20 | HD duo 2x20x110 (2x 26mm) | 110 | 13 | 300 |
2x20 | HD duo 2x20x160 (2x 26mm) | 160 | 12 | 400 |
2x25 | HD duo 2x25x110 (2x 29mm) | 110 | 14 | 350 |
2x25 | HD duo 2x25x160 (2x 29mm) | 160 | 13 | 450 |
2x25 | HD duo 2x25x200 (2x 29mm) | 200 | 10.5 | 550 |
2x28 | HD duo 2x28x110 (2x 36mm) | 110 | 15 | 500 |
2x28 | HD duo 2x28x160 (2x 36mm) | 160 | 13.5 | 600 |
2x28 | HD duo 2x28x200 (2x 36mm) | 200 | 11 | 700 |
2x32 | HD duo 2x32x160 (2x 40mm) | 160 | 14 | 650 |
2x32 | HD duo 2x32x200 (2x 40mm) | 200 | 12 | 750 |
2x40 | HD duo 2x40x160 (2x 54mm) | 160 | 18.5 | 700 |
2x40 | HD duo 2x40x200 (2x 54mm) | 200 | 16 | 800 |
25+20 | HD duo 25+20x160 (29mm + 26mm) | 160 | 12.5 | 450 |
25+20 | HD duo 25+20x200 (29mm + 26mm) | 200 | 10.5 | 550 |
32+25 | HD duo 32+25x160 (40mm + 29mm) | 160 | 13.5 | 650 |
32+25 | HD duo 32+25x200 (40mm + 29mm) | 200 | 11 | 750 |
40+25 | HD duo 40+25x160 (54mm + 29mm) | 160 | 15.5 | 700 |
40+25 | HD duo 40+25x200 (54mm + 29mm) | 200 | 13 | 800 |
50+25 | HD duo 50+25x160 (63mm + 29mm) | 160 | 16 | 800 |
50+25 | HD duo 50+25x200 (63mm + 29mm) | 200 | 14 | 850 |