Ritmo HDPE Welding Machine is a butt fusion machine built to join HDPE pipe end to end over a heated mirror plate. The range covered on this page runs dn90 to dn630 in SDR11 and SDR17. Sizes are quoted as dn, the outside diameter of the pipe in millimetres.
This page stands on its own rather than covering a size or a variant of another family, so the specification below is complete for the Ritmo HDPE Welding Machine.
Product range
The HDPE jointing machine family covers manual and automatic butt fusion machines, plus the electrofusion control units that run socket fittings.
This page covers the Ritmo HDPE Welding Machine specifically. The dn ladder, the wall series and the fusion geometry are the family's; what separates one variant from the next is the description it is ordered under and the sizes stocked against it.
Machines are specified by the size range they weld and by whether the cycle is run manually or automatically. On the Ritmo HDPE Welding Machine it is the welding range that has to match the pipe on site.
Size range and wall series
Sizes for the Ritmo HDPE Welding Machine are grouped into bands by the work they do.
| Size band | Wall series | Typical use |
|---|---|---|
| dn90 - dn160 | SDR11 and SDR17 | service and house connections |
| dn180 - dn315 | SDR11 and SDR17 | trunk mains and industrial lines |
| dn355 - dn630 | SDR11 and SDR17 | large bore and project supply |
Wall series covered are SDR11 and SDR17. The heated plate temperature and the heat soak time follow from the wall series, so a machine set for one series will not weld the other correctly.
Machine specification
The Ritmo HDPE Welding Machine is built around a PTFE-coated heating plate and a faced carriage, with the fusion parameters held in the control unit. Each machine is issued with the calibration record and the parameter card for the sizes it covers.
Do not weld pipe that is out of round or has not been faced square. Clean the faces, match the drag pressure to the plate temperature, and hold the joint under pressure through the whole cooling time.
Applications
Butt fusion machines are the standard kit for new HDPE installations where long runs are welded on the surface: water and gas mains, industrial process lines, mining dewatering and irrigation projects.
For the Ritmo HDPE Welding Machine the range that matters in every one of those sectors is dn90 to dn630, and the wall series follows from the design pressure of the line rather than from the sector itself.
Ordering information
Quote the welding range, the wall series, the fusion mode and the supply voltage. For the Ritmo HDPE Welding Machine the size band to state is dn90 to dn630.
Related pages
Catalogue pages worth reading alongside the Ritmo HDPE Welding Machine:
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