... airflow i BQG-100/0.3 Pneumatic Membrane PumpPneumatic Membrane Pump is easy to operate, reliable, portable with low noise, ... and rib drill. No danger of electricity.The pneumatic membrane pump (nonmetal cover) is the only product obtained the Safety Standard ... special structure, flexible running, no dead center, low air consumption;f. Perfect self-absorption, do not need inverse pouring, can replace ...