GF+ Aquasystem PP-R Reducer
GF+ Aquasystem PP-R Reducer — A reducing fitting that joins pipes of two different diameters in a straight line. The large end is a socket; depending on size, the small end is either a socket or a spigot (male).
Applications
- Size reduction from riser to floor distribution
- Transition from main line to branch diameters
- Diameter adaptation at pump, manifold and valve connections
Key features
- Wide size range from Ø25/20 up to Ø160/110 mm
- PN25 pressure rating
- Straight transition: size reduction without change of direction
Technical specifications
| Property | Value |
|---|---|
| Series | GF+ Aquasystem (Georg Fischer Piping Systems) |
| GF product description | AQUASYSTEM Reducer PP-R |
| Body material | PP-R (polypropylene random copolymer, type 3) |
| Pressure rating (GF data) | PN25 |
| 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 |
Dimensions
| Size | Product code | d | d1 | PN | D | D1 | L1 | L2 | LB |
|---|---|---|---|---|---|---|---|---|---|
| 25-20 mm | 4300402510021 | 25 | 20 | 25 | 16.3 | 28.0 | 18.5 | 15.5 | 36.0 |
| 32-20 mm | 4300403210121 | 32 | 20 | 25 | 20.9 | 29.0 | 21.0 | 14.5 | 41.5 |
| 32-25 mm | 4300403210221 | 32 | 25 | 25 | 21.4 | 33.8 | 19.6 | 16.0 | 38.2 |
| 40-20 mm | 4300404010321 | 40 | 20 | 25 | 30.8 | 29.0 | 26.8 | 16.0 | 45.8 |
| 40-25 mm | 4300404010421 | 40 | 25 | 25 | 30.8 | 34.0 | 27.0 | 19.0 | 46.5 |
| 40-32 mm | 4300404010521 | 40 | 32 | 25 | 31.0 | 42.5 | 26.7 | 20.0 | 47.0 |
| 50-20 mm | 4300405010621 | 50 | 20 | 25 | 33.2 | 26.5 | 23.5 | 14.5 | 47.5 |
| 50-25 mm | 4300405010721 | 50 | 25 | 25 | 33.2 | 33.0 | 23.5 | 16.0 | 48.5 |
| 50-32 mm | 4300405010821 | 50 | 32 | 25 | 33.2 | 41.5 | 23.5 | 18.1 | 50.7 |
| 50-40 mm | 4300405010921 | 50 | 40 | 25 | 33.4 | 52.0 | 23.5 | 20.5 | 53.8 |
| 63-25 mm | 4300406311021 | 63 | 25 | 25 | 42.0 | 33.0 | 27.5 | 16.5 | 55.3 |
| 63-32 mm | 4300406311121 | 63 | 32 | 25 | 41.8 | 41.5 | 27.5 | 18.1 | 58.0 |
| 63-40 mm | 4300406311221 | 63 | 40 | 25 | 42.0 | 52.0 | 27.5 | 20.7 | 60.5 |
| 63-50 mm | 4300406311321 | 63 | 50 | 25 | 43.0 | 65.5 | 27.5 | 32.2 | 63.0 |
| 75-50 mm | 4300407511421 | 75 | 50 | 25 | 50.0 | 66.0 | 30.0 | 24.0 | 68.0 |
| 75-63 mm | 4300407511521 | 75 | 63 | 25 | 51.5 | 82.4 | 30.0 | 28.0 | 71.5 |
| 90-50 mm | 4300409011521 | 90 | 50 | 25 | 60.0 | 66.0 | 40.0 | 23.5 | 68.0 |
| 90-63 mm | 4300409011621 | 90 | 63 | 25 | 60.0 | 84.0 | 41.0 | 27.5 | 75.0 |
| 90-75 mm | 4300409011721 | 90 | 75 | 25 | 59.0 | 98.0 | 41.0 | 30.5 | 81.0 |
| 110-63 mm | 4300411011721 | 110 | 63 | 25 | 70.8 | 84.0 | 45.0 | 28.0 | 82.0 |
| 110-75 mm | 4300411011821 | 110 | 75 | 25 | 72.0 | 98.5 | 45.0 | 31.0 | 87.0 |
| 110-90 mm | 4300411011921 | 110 | 90 | 25 | 75.0 | 118.5 | 45.0 | 35.5 | 92.0 |
| 160-110 mm | 4300416011921 | 160 | 110 | 25 | 106.8 | 144.5 | 50.0 | 37.0 | 90.0 |
d: pipe outside diameter (mm) · d1: second outlet pipe diameter (mm) · PN: nominal pressure (bar, 20 °C) · D: body outside diameter (mm) · D1: second outlet body diameter (mm) · L1: socket depth (mm) · L2: second socket depth (mm) · 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 |
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
How is the size read?
For example, 32-20 mm: the large end connects to a Ø32 line, the small end to a Ø20 mm line.
What is the difference between a reducer and a reducing tee?
A reducer reduces the diameter in a straight line; a reducing tee takes a branch of a different diameter off the line.
Used together in the Aquasystem system
PP-R Standard Pipe SDR6 · PP-R Fiberglass Reinforced (Faser) Pipe · PP-R Welding Kit · PP-R Welding Dies · PP-R Pipe Cutter · PP-R Elbow 90°
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.