 |
|
| Pipe
materials |
cast
iron, steel, and PVC |
| Diameter |
1"
- 2½ " (3/4" under development) |
| Length
|
up
to 200 ft |
| Operating
pressure |
up
to 60 psi |
| Curb
valve (reamed) |
can be lined |
| Pipe
condition |
heavy
corrosion possible, e. g. holes or gaps up to 1" |
| Coupling
|
can
be lined |
| Diameter
changes |
can
be lined up to one dimension increase |
| Adhesive
|
epoxy
resin |
| Curing
|
warm
or cold |
| Performance
|
depending
on size of rehabilitation crew: 3 to 4 services per working day |
| Excavation
|
only
one small access pit required at main |
| Special
features of the technology: |
up
to five 90° bends can be lined wrinkle-free maintains gas-tightness
even after pipe break uniform bonding, i.e.
no gas migration no significant reduction in pipe capacity
|
