Joining without welding
Compression fittings for PE, PP and PVC-C pipe – and the transition from steel to plastic
Plastic pipe can be welded (PE), glued (PVC) or socket-fused (PP) – but not when water keeps running, the pipe marking is missing or simply the time. Then you clamp: with a support sleeve in the pipe that takes the clamping pressure, and a fitting outside. The same fittings make the transition where a PE line meets steel. For large nominal sizes and mixed materials underground there is the wide-range coupling that swallows several outside diameters in one size.
- Pipe types
- PE 80, PE 100, PE-Xa (SDR 11; GF SDR 11/17,6) · PP-R/PP-RCT · PVC-C · transition steel–PE · cast iron, steel, PE, PVC, GRP (wide range)
- Diameters
- PE 20–110 mm · PP/PVC-C 16–50 mm · wide range DN 50–600 (46–637 mm)
- Mandatory
- Support sleeve in the plastic pipe (Gebo up to 63 mm, above that commercial SDR 11 sleeves; GF supplies them)
- Manufacturers
- Gebo gebooriginal, polygebo · GF PRIMOFIT, WAGA MULTI/JOINT 3000 Plus
Which solution for which plastic pipe
For PE pipe to DVGW GW 335 and DIN 8074/8075 (PE 80, PE 100, PE-Xa, SDR 11) the malleable-iron compression fitting is the classic service-line solution: series 153/155 (20 to 63 mm) and 22P (75 to 110 mm) with NBR for water, gas outside buildings and compressed air, 156 (32 to 63 mm) and 223 (75 to 90 mm) with EPDM for drinking water (156: DVGW GW 335-B4), as PE–PE coupling or as steel–PE transition. The support sleeve is mandatory and ordered separately. For PP-R/PP-RCT (DIN 8077/8078) and PVC-C (DIN 8079/8080) polygebo is built: brass compression fittings with matching support sleeve per SDR, 16 to 50 mm, repair without glueing or welding, on PVC-C even with water still running. GF PRIMOFIT covers PE (SDR 11 and 17.6) and PE-Xa 20 to 63 mm and brings the support sleeve along. Multilayer pipe is a world of its own – for that Multigebo.
| Solution | Pipe | Outside diameter | What it does |
|---|---|---|---|
| Compression fittings for PE pipe and steel-PE transition Gebo · 153/155 · 22P (NBR) · 156 / 223 (EPDM) | PE pipe (PE 80, PE 100, PE-Xa, SDR 11) | 20–110 mm | Support sleeve mandatory for all PE series (Gebo sleeve up to 63 mm, commercial SDR 11 sleeves from 75 mm, ordered separately). NBR: 153/155 for 20-63 mm, 22P for 75-110 mm – water 20 °C, gas outside buildings 4 bar, compressed air. EPDM drinking water: 156 for 32-63 mm, 223 for 75-90 mm, up to 25 °C. Also as steel-to-PE transition. |
| Compression fittings for PP and PVC-C pipe Gebo · 330 (PP-R/PP-RCT) / 331 (PVC-C) | PP-R/PP-RCT pipe (DIN 8077/8078), PVC-C pipe (DIN 8079/8080) | 16–50 mm | Brass compression fitting with support sleeve for PP and PVC-C pipe: repair without glueing or welding, also with water still running – tension-proof. SDR must match (sleeve set). |
| Compression fittings for PE pipe and steel-PE transition GF · PRIMOFIT PE | PE pipe (SDR 11 and 17.6), PE-Xa (S 5), transition to steel pipe | 20–63 mm | Insert stiffener (support sleeve) included and mandatory – PE 100 up to 16 bar water, gas 10 bar (PE-Xa 8 bar). Transition pieces steel 1/2 to 2 inch on PE 20 to 63 mm. |
| Wide-range couplings GF · WAGA MULTI/JOINT 3000 Plus | grey and ductile cast iron, steel/stainless, copper, GRP, PVC-U, PP, PE, ABS pipe (plastics with support sleeve) | 46–637 mm | Wide-range coupling DN 50 to DN 600: one size spans up to 43 mm of outside diameter (DN 50 = 46-71 mm, DN 100 = 104-132 mm, DN 200 = 192-232 mm, DN 400 = 392-433 mm) - material transitions and repairs on buried and above-ground water, waste-water and gas lines. Restrained (Uni/Fikser) or non-restrained (Uni/Fleks) - on plastic pipe restrained only with support sleeve, on GRP and cement-bound pipe not restrained. Water 16 bar (25 bar non-restrained), gas 8 bar (DN 50-400), -5 to +50 °C. |
Service limits per medium
Plastic pipe limits the temperature more than the fitting does: malleable iron on PE is released for cold water (NBR series 20 °C, EPDM series 25 °C), polygebo on PP and PVC-C up to 80 °C at 6 bar, GF PRIMOFIT on PE up to 40 °C. Gas via PE service lines with the series approved for it (rule of thumb FR-19).
| Solution | Medium | max. °C | max. bar | Condition |
|---|---|---|---|---|
| Compression fittings for PE pipe and steel-PE transition Gebo 153/155 · 22P (NBR) · 156 / 223 (EPDM) | drinking water, cold | 25 | 16 | series 156: PE 80 and PE-Xa 12.5 bar, PE 100 16 bar – series 223: 10 bar |
| Compression fittings for PE pipe and steel-PE transition Gebo 153/155 · 22P (NBR) · 156 / 223 (EPDM) | water (not drinking water) | 20 | 16 | NBR series 153/155: PE 80 and PE-Xa 12.5 bar, PE 100 16 bar – series 22P (75-110 mm): 10 bar |
| Compression fittings for PE pipe and steel-PE transition Gebo 153/155 · 22P (NBR) · 156 / 223 (EPDM) | gas outside buildings | – | 4 | NBR series 153/155 (20-63 mm) with Gebo support sleeve, DVGW G 5600-1 – sizes 30, 38 mm and 75-110 mm not for gas |
| Compression fittings for PE pipe and steel-PE transition Gebo 153/155 · 22P (NBR) · 156 / 223 (EPDM) | compressed air | – | 12.5 | NBR series: PE 100 12.5 bar, PE 80 and PE-Xa 10 bar – series 22P 10 bar |
| Compression fittings for PP and PVC-C pipe Gebo 330 (PP-R/PP-RCT) / 331 (PVC-C) | drinking water, cold | 25 | 10 | – |
| Compression fittings for PP and PVC-C pipe Gebo 330 (PP-R/PP-RCT) / 331 (PVC-C) | drinking water, warm | 80 | 6 | – |
| Compression fittings for PP and PVC-C pipe Gebo 330 (PP-R/PP-RCT) / 331 (PVC-C) | heating water | 80 | 6 | – |
| Compression fittings for PE pipe and steel-PE transition GF PRIMOFIT PE | water (not drinking water) | 40 | 16 | system water NBR – drinking water EPDM 25 °C cold / 40 °C warm |
| Compression fittings for PE pipe and steel-PE transition GF PRIMOFIT PE | gas outside buildings | 40 | 10 | PE 100 – PE-Xa 8 bar – 5 bar with threaded connection |
| Wide-range couplings GF WAGA MULTI/JOINT 3000 Plus | water (not drinking water) | 50 | 16 | DN 50-400 restrained - 25 bar non-restrained - DN 425-600: 10 / 16 bar - EPDM 0 to 50 °C, NBR -5 to 50 °C |
| Wide-range couplings GF WAGA MULTI/JOINT 3000 Plus | gas outside buildings | 50 | 8 | DN 50-400 (5 bar restrained on some pipes, see manual) - DN 425-600: 5 / 8 bar - NBR |
Manufacturer data; the installation instructions of the respective series apply.
Wide-range coupling: one fitting, many pipes
Underground, a pipe to standard rarely lies next to another: grey cast iron from 1960 next to ductile iron, steel next to PE, fibre cement in between. The wide-range coupling GF WAGA MULTI/JOINT 3000 Plus clamps with a sealing system of plastic segments on a clamping range of up to 43 mm – DN 100 covers 104 to 132 mm, DN 200 192 to 232 mm. It comes restrained (Uni/Fikser, with grip segments) and non-restrained (Uni/Fleks); on plastic pipe restraint is permitted only with a support sleeve, on GRP and cement-bound pipe not at all. Water 16 bar (25 bar non-restrained), gas 8 bar, −5 to +50 °C, GSK coating, H2-ready certificate for DN 50 to 250. We procure it on request .
What we stock
PE compression fittings of the Gebo series 153/155, 22P, 156/223, the PE versions of GF PRIMOFIT, polygebo and WAGA we procure on request; for steel pipe we stock the GF PRIMOFIT transition pieces to thread (male and female 1/2 to 2 inch) and the PRIMOFIT couplings (range on the steel-pipe page). Support sleeves belong to every PE order – tell us outside diameter and SDR.
Further in the topic
In the topic: Joining without welding – the entry page · Compression fittings for steel pipe and boiler tube · Multigebo for multilayer pipe · Tool: which solution fits?
From the knowledge base: GF plastic piping systems: welding and bonding · Mixed installation and corrosion · Measure the outside diameter, do not guess the nominal size
Frequently asked questions
Why does PE pipe need a support sleeve?
Because plastic creeps under clamping pressure: without a sleeve the grip ring would constrict the pipe and the joint would loosen over time. The sleeve holds the inside diameter, the grip ring grabs outside – which is why the SDR must match.
Can I transition from PE to steel with it?
Yes – Gebo supplies the malleable-iron fitting as steel–PE transition from 21.3/20 to 114.3/110 mm, GF PRIMOFIT transition pieces 1/2 to 2 inch to PE 20 to 63 mm.
Does repair work with water still running?
With polygebo on PVC-C yes – that is the advantage over glueing, which needs curing time. For PE service lines the network operator’s release applies.
What about multilayer pipe?
Multilayer pipe has metal inside and plastic outside and its own diameter series (16, 20, 26, 32 mm) – Multigebo is built for that, not the PE fitting.
Leaking pipe, extending a line, joining two systems?
Send us what you have – pipe type, measured outside diameter, medium, drawing. We tell you which solution fits from stock and what is procured.
Send an inquiryYour inquiry to Zickwolff
Send us what you have – designation, standard, quantity, date. We will clarify the rest with you.
One item or a question
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Not in stock? We procure it – single items too.
Designation, standard and quantity are enough.
Several items
Send bill of materials
200 items? One parts list is enough – we deliver complete.
Attach it as a file.
Helpful if already known: project and country, date needed, certificates, packaging and language of the packing lists. If anything is missing, we will ask.
It is urgent
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When do you need it? Express delivery, to the site if required.
Tell us by when you need the material – we will tell you what is possible.
As of 2026-10-03. Manufacturer data from the Gebo sub-catalogues 2026 (gebooriginal, gebounifix, multigebo, minigebo, polygebo), the Gebo general catalogue 2026/27 and the Gebo product data (gebo.group), the GF PRIMOFIT technical catalogue (2025) and the GF WAGA MULTI/JOINT 3000 Plus technical manual – evidence class H (authorised distributor). Service limits are manufacturer data; the installation instructions of the respective series prevail. Availability per our article master (as of 2026-09-04), without quantities. No installation instructions, no legal advice – gas installations belong in the hands of the licensed installer.