1.It is tank for foam AFFF,which is use for fire. 2.brand ... producct. 3.High qulity and competitive price. Foam Bladder Tank proportioning System Mounting type : vertical , horizontal Storage capacity: 500LTR TO ... with Nylon Reinforcement Main parts : tank , bladder , external pipe , pressure proportional,Vent and drain Valve , foam concentrate control valve , foam concentrate ,level ...