... line circulation pump Introduction The type TD pumps are single stado in-linecentrifugal pumps,equpped with ... the cavitations,and lessen the libration and noise,you are suggested to adopt NPSH in table 2,to ... side of the pumps. Application The pumps are applicable for clean,attenuate,non-corrosive,non-flammable ... not be above 40. 5If the pumps are installed outdoors,there should be covers to rotect ...