Small pump head size and compact design.Small pump head size with optimizable connections and plunger acting directly on the compressed fluid.High volumetric efficiency, low transmission losses at high pressures.Suitable for conveying fluid without solid particles.Can convey high viscosity fluid and general corrosive fluid.Not recommended when conveying corrosive slurry and flammable and explosive dangerous chemicals.Variable eccentric mechanism adjustment, to ensure the flow adjustment accuracy and the flow of gentle change.