GF+ Aquasystem PP-R Fiberglass Reinforced (Faser) Pipe SDR7.4 (PN20)
GF+ Aquasystem PP-R Fiberglass Reinforced (Faser) Pipe SDR7.4 (PN20) — The three-layer Aquasystem Faser pipe: inner and outer layers of PP-R, middle layer of fiberglass reinforced PP-R. The fiberglass layer significantly reduces the lengthwise expansion of the pipe when heated compared to standard PP-R; the pipe is stiffer and sags less.
Applications
- Domestic hot water risers and long distribution lines
- Radiator and heating installations
- Exposed (surface-mounted) installations, shaft and ceiling crossings
Key features
- Fiberglass middle layer: low thermal expansion (approx. 0.035 mm/m·K)
- SDR7.4 wall, PN20 pressure rating
- Fewer expansion loops and wider clip spacing
Technical specifications
| Property | Value |
|---|---|
| Series | GF+ Aquasystem (Georg Fischer Piping Systems) |
| GF product description | AQUASYSTEM Faser Fiberglass Reinforced Pipe PP-R PN20 SDR7.4 |
| Raw material | PP-R (polypropylene random copolymer, type 3) |
| Construction | Three layers: PP-R / fiberglass reinforced middle layer / PP-R |
| Pressure rating (GF data) | PN20 |
| Jointing | Socket fusion welding — no seals or compression parts |
| Color | White |
| Application | Cold and hot drinking water, heating systems |
| Standards | Pipe: DIN 8077/8078, EN ISO 15874 · Fittings: DIN 16962, EN ISO 15874 |
| Length / sales unit | 4 m lengths; sold by the meter in multiples of 4 m |
Dimensions
| Size | Product code | d | e | SDR | PN | LB | Inside diameter |
|---|---|---|---|---|---|---|---|
| 20 mm | 4200002000121 | 20 | 2.8 | 7.4 | 20 | 4000 | 14.4 |
| 25 mm | 4200002500221 | 25 | 3.5 | 7.4 | 20 | 4000 | 18.0 |
| 32 mm | 4200003200321 | 32 | 4.4 | 7.4 | 20 | 4000 | 23.2 |
| 40 mm | 4200004000421 | 40 | 5.5 | 7.4 | 20 | 4000 | 29.0 |
| 50 mm | 4200005000521 | 50 | 6.9 | 7.4 | 20 | 4000 | 36.2 |
| 63 mm | 4200006300621 | 63 | 8.6 | 7.4 | 20 | 4000 | 45.8 |
| 75 mm | 4200007500721 | 75 | 10.3 | 7.4 | 20 | 4000 | 54.4 |
| 90 mm | 4200009000821 | 90 | 12.3 | 7.4 | 20 | 4000 | 65.4 |
| 110 mm | 4200011000921 | 110 | 15.1 | 7.4 | 20 | 4000 | 79.8 |
| 125 mm | 4200012500121 | 125 | 17.1 | 7.4 | 20 | 4000 | 90.8 |
| 160 mm | 4200016000121 | 160 | 21.9 | 7.4 | 20 | 4000 | 116.2 |
d: pipe outside diameter (mm) · e: wall thickness (mm) · SDR: standard dimension ratio (d/e) · PN: nominal pressure (bar, 20 °C) · LB: overall length (mm). Dimensions from the GF Piping Systems data sheet; the technical drawing in the product images shows where each dimension applies.
Socket fusion welding times
| Pipe diameter | Welding depth (mm) | Heating (s) | Joining time (s) | Cooling (min) |
|---|---|---|---|---|
| Ø20 | 14 | 5 | 4 | 2 |
| Ø25 | 15 | 7 | 4 | 2 |
| Ø32 | 16.5 | 8 | 6 | 4 |
| Ø40 | 18 | 12 | 6 | 4 |
| Ø50 | 20 | 18 | 6 | 4 |
| Ø63 | 24 | 24 | 8 | 6 |
| Ø75 | 26 | 30 | 8 | 8 |
| Ø90 | 29 | 40 | 8 | 8 |
| Ø110 | 32.5 | 50 | 10 | 8 |
| Ø125 | 40 | 60 | 10 | 8 |
Values per DVS 2207-11 at +20 °C ambient and 260 °C heating tool temperature. Below +5 °C, extend the heating time by about 50%. Heating time starts when pipe and fitting are fully seated on the heating dies; during the joining time the parts may be aligned axially without twisting.
Installation tips
- Cut the pipe square with a pipe cutter and mark the welding depth on the pipe.
- Push pipe and fitting onto the heating dies at the same time without twisting; when the heating time is over, join them quickly and axially.
- Do not twist the parts after the joining time; do not pressurize the line before the cooling time has passed.
- Pressure-test the installation before closing walls or screed.
Frequently asked questions
Is peeling required before welding?
No. Aquasystem Faser pipe is joined directly by socket fusion welding with standard PP-R fittings, without peeling.
How is the pipe sold?
Pipes are produced in 4 m lengths; they are sold by the meter in multiples of 4 m.
Used together in the Aquasystem system
PP-R Standard Pipe SDR6 · PP-R Welding Kit · PP-R Welding Dies · PP-R Pipe Cutter · PP-R Elbow 90° · PP-R Tee
About the brand
Aquasystem is the PP-R piping system of Swiss-based Georg Fischer (GF) Piping Systems: pipes, fittings, valves and welding tools made to work together and joined with the same welding method. Novus Energy supplies all GF+ Aquasystem components for projects worldwide, shipped from Istanbul.