High Air Pressure DTH Hammers Without Foot Valve for Mining CD35A

High Air Pressure DTH Hammers Without Foot Valve for Mining CD35A. No Foot Valve Design: Eliminates foot valve fracture and expansion issues for reliable operation. Higher Drilling Speed: Drilling speed is 15%-30% higher compared to hammers with foot valves. Lower Energy Consumption: Oil consumption is about 10% lower than traditional foot valve models. Simple Structure: Reliable parts with long life and easy, cheap maintenance requirements. Wide Size Range: Available in sizes from 1-3' to 12' hammers with various bit connections. ISO Certified Quality: Manufactured under ISO 9001:2000/2015 standards with 100% inspection. Customization Options: Supports customization from samples, designs, and full customization. Low MOQ: Minimum Order Quantity is just 1 Pc, allowing flexible purchasing.