Description
Progressive Blow Energy
The unique design of our piston generates a perfect, long shock wave in a trapezoidal shape:
- better transmission of energy at the couplings
- minimum stress into the drilling rods
- better bit penetration
Hydraulic Dampening System
The action of the dampening piston, not only absorbs the lost part of reflected energy but ensure a constant, thrust onto the tools:
- better efficiency
- no internal peak of pressure source of cavitation
- ideal drifter protection
Energy Recovery Valve
This valve allows for the piston’s rebound energy to be utilized for the next blow, giving a definite advantage over the HC series drifters:
- optimum shockwave transmission
- drifter protection and reduced tool vibration
Hydraulic Reverse Percussion
The optional hydraulic reverse percussion system insures a real back hammering:
- tool extraction in fractured ground
- no rods left in the hole