Manufacturer of Hydraulic Bolting Solutions QMP304 - Pneumatic pump for hydraulic wrench •Use compressed air as the power source, applicable to coal mine etc, with advantages of anti-explosion, safety, no heat and long time working. •High performance pneumatic reversing valve, safe and reliable, stable performance. •Al-Ti alloy pump body, light weight, easy to carry. •It can drive 2 hydraulic wrenches simultaneously or 4 if requested. •4-70MPa adjustable pressure. •Use 4-8 bar air pressure. •It can be customized as requested. •The pressure can be released after pressing the button when the pump stops working. •Steel frame can protect the pump body and makes it easy to carry. •Aluminium explosion-proof handle, solid and reliable. Technical parameters Model Rated power Air consumption (kw) (m3/h) 1.3 Flow (L/min)