... with the metrits of self-pumping pump,diving pump,shield pump,slurry pump and impurity pump etc.1)There are 8 ... 2"),65mm(2 1/2"),80mm(3"),100mm(4").2)Kinds of materialsAluminum Alloy,Cast iron, ... Stainless steel3)The diaphragm pump according to different liquid medium rubber were ... 4"Outlet3/8"1/2"1"1 1/4"2"2 1/2"3"4"Inlet Caliber(mm)88101014141616 Pneumatic diaphgagm pump ...