... pressure stability 4.Recycle system and full mix Diaphragm Pumps:Imported diaphragm pumps, with advanced fuel-feeding and circulation system, which ... some uneasy flowed medium, with the merits the merits of self-pumping pump, diving pump, shield pump, slurry pump and ... over-loading, the pump will automatically stop and possesses the self protection function. When the load recovers normally, it also ...