
Duplex system for shallow cased boreholes. A hydraulic drifter applies rotation and percussion to casing and inner rods together. Flushing fluid and cuttings return through the annulus and exit at the discharge bell.
| Technical data | |
|---|---|
| System diameter | 88.9–219.1 mm |
| Drive | Hydraulic drifter |
| Pipe/rod lengths | 500–6000 mm |
| Flushing medium | Water or air |
| Threads | Right-/left-hand, tapered or parallel |
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