Pneumatic diaphgagm pump Can exhaust flow liquid,corrosive liquid,high toxic liquid and liquid with particles Quick delivery ... medium,with the metrits of self-pumping pump,diving pump,shield pump,slurry pump and impurity pump etc.1)There are 8 proudct models: ... of materialsAluminum Alloy,Cast iron,Stainless steel3)The diaphragm pump according to different liquid medium rubber were used respectively ...