Our company own design high air pressure DTH hammer, without foot-valve, is one of the most advanced design in the world.

It has following advantages:

• Bit without foot valve will avoid the problem of foot valve broken or thermal expansion.
• Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with foot valve.
• Less parts, simplified, and with parts proper heating treated.
• Extend the life of using and easier to repairing.