DTH Hammer

2.ND/QL Valveless Series DTH Hammer

This high air pressure DTH hammer work without foot valve is designed and developed by our own, which is the one of the most advanced DTH hammer in the world.


It has following advantages:


  • Avoid the problem happens on foot valve. Fracture expansion and contraction.
  • Lower air consumption and higher impact frequency. 15-30% higher drilling efficiency than the bit with foot valve.
  • Simpler structure and less spare parts, makes easier & cheaper maintenance.
  • Heat-hardened spare parts, makes longer serving life and less problem.
  • Thread connection for top sub and drive chuck, makes easier disassembly.