Features of mechanisms>>
	Air passage switch adopts stop valve, good in shape, color and sealing, small in action, only 1-2mm, so, the mechanical wear is small and the service life is prolonged. Pushing mechanism adopts spring reset pushed by piston to a single direction, XY seal ring on the piston as automatic compensation, so, air leakages occur rarely and long-term operation can be ensured. Backing-twisting machine adopts metal fluidic backing-twisting tube and utilizes airflow to produce the effects in the tube such as drawing-in, discharging and pulling etc., so, the mechanical wear is extremely small and the stability of backing-twisting process and long service life of parts can be ensured. Twisting adopts open type (without cover) self-sealing two-way twisting cavity. Model 200 and model 201B spraying mechanism adopts fluidics and use common tap-water.