D-type boiler feed pump is used for transporting clean water and liquids with physical and chemical properties similar to water. When the head of this type of water pump is between 46 and 576 meters, the flow rate is between 6 and 55 meters per hour, and the maximum temperature of the liquid is below 110 meters. It is suitable for supplying water to boilers, factories, and cities. The water pump is equipped with a Y-shaped electric motor. There are currently four types of D-type pumps manufactured, including 11/2D-5, 21/2D6, and 4D8. Structural description: The D-type water pump is a multi-stage segmented type, with its suction port located on the inlet section and its discharge port vertically upward on the outlet section. The lift of the pump can be adjusted according to its use. The proper assembly of the water pump has a significant impact on its performance. It depends on the alignment of the outlet of each impeller and the inlet of the guide vanes. The center of the outlet of each stage of the impeller must be aligned with the center of the guide vanes, and any slight deviation will cause the water section to be straight upward. The head of the water pump can be adjusted according to the usage. Whether the water pump is well assembled or not has a significant impact on its performance, especially the relative position between the outlet of each impeller and the inlet of the guide vanes. The center of the outlet of each stage of impeller must be aligned with the center of the guide vanes. Any slight deviation will reduce the flow rate, head, and efficiency of the water pump. Therefore, attention must be paid to maintenance and assembly, and any deviation must be adjusted.

Model meaning:
For example: D6-25 × 6
D-Boiler feedwater pump
6-Flow rate (m3/h)
25- Single stage head (meters)
6-Pump Stage

Performance parameter table of D-type boiler feedwater pump

D6-25×3	six point three	one point seven five	seventy-five	two thousand nine hundred and fifty	forty-five	two	two point eight six	five point five
D6-25×4			one hundred				three point eight one	seven point five
D6-25×5			one hundred and twenty-five				four point seven seven	seven point five
D6-25×6			one hundred and fifty				five point seven two	eleven
D6-25×7			one hundred and seventy-five				six point six seven	eleven
D6-25×8			two hundred				seven point six three	fifteen
D6-25×9			two hundred and twenty-five				eight point five eight	fifteen
D6-25×10			two hundred and fifty				eight point five three	eighteen point five
D6-25×11			two hundred and seventy-five				ten point five	eighteen point five
D6-25×12			three hundred				eleven point four four	eighteen point five
D12-25×3	twelve point five	three point four seven	seventy-five	two thousand nine hundred and fifty	fifty-four	two	four point seven three	seven point five
D12-25×4			one hundred				six point three zero	eleven
D12-25×5			one hundred and twenty-five				seven point eight eight	eleven
D12-25×6			one hundred and fifty				nine point four six	fifteen
D12-25×7			one hundred and seventy-five				eleven point zero four	fifteen
D12-25×8			two hundred				twelve point six one	eighteen point five
D12-25×9			two hundred and twenty-five				fourteen point one eight	eighteen point five
D12-25×10			two hundred and fifty				fifteen point seven six	twenty-two
D12-25×11			two hundred and seventy-five				seventeen point three four	twenty-two
D12-25×12			three hundred				eighteen point nine	thirty
D12-30×3	twenty-five	six point nine four	ninety	two thousand nine hundred and fifty	sixty-two	two point two	nine point eight eight	fifteen
D12-30×4			one hundred and twenty				thirteen point one	eighteen point five
D12-30×5			one hundred and fifty				sixteen point four seven	twenty-two
D12-30×6			one hundred and eighty				nineteen point seven seven	thirty
D12-30×7			two hundred and ten				twenty-three point one	thirty
D12-30×8			two hundred and forty				twenty-six point four	thirty-seven
D12-30×9			two hundred and seventy				twenty-nine point six five	thirty-seven
D12-30×10			three hundred				thirty-two point nine	forty-five
D46-30×3	forty-three	eleven point nine	ninety	two thousand nine hundred and fifty	seventy	three	sixteen point one one	twenty-two
D46-30×4			one hundred and twenty				twenty-one point four eight	thirty
D46-30×5			one hundred and fifty				twenty-six point eight five	thirty-seven
D46-30×6			one hundred and eighty				thirty-two point two one	thirty-seven
D46-30×7			two hundred and ten				thirty-seven point five eight	forty-five
D46-30×8			two hundred and forty				forty-two point nine five	fifty-five
D46-30×9			two hundred and seventy				forty-eight point three two	fifty-five
D46-30×10			three hundred				fifty-three point six nine	seventy-five
D46-50×3	forty-six	twelve point eight	one hundred and fifty	two thousand nine hundred and fifty	sixty-three	two point eight	twenty-nine point eight three	thirty-seven
D46-50×4			two hundred				thirty-nine point seven seven	forty-five
D46-50×5			two hundred and fifty				forty-nine point seven one	fifty-five
D46-50×6			three hundred				fifty-nine point six five	seventy-five
D46-50×7			three hundred and fifty				sixty-nine point six	seventy-five
D46-50×8			four hundred				seventy-nine point five four	ninety
D46-50×9			four hundred and fifty				eighty-nine point four eight	one hundred and ten
D46-50×10			five hundred				ninety-nine point four two	one hundred and ten
D46-50×11			five hundred and fifty				one hundred and nine point three six	one hundred and thirty-two
D46-50×12			six hundred				one hundred and nineteen point three	one hundred and thirty-two
D85-45×2	eighty-five	twenty-three point six	ninety	two thousand nine hundred and fifty	seventy-two	four point two	twenty-eight point nine four	thirty-seven
D85-45×3			one hundred and thirty-five				forty-three point four	fifty-five
D85-45×4			one hundred and eighty				fifty-seven point eight seven	seventy-five
D85-45×5			two hundred and twenty-five				seventy-two point three four	ninety
D85-45×6			two hundred and seventy				eighty-six point eight one	one hundred and ten
D85-45×7			three hundred and fifteen				one hundred and one point three	one hundred and thirty-two
D85-45×8			three hundred and sixty				one hundred and fifteen point seven	one hundred and thirty-two
D85-45×9			four hundred and five				one hundred and thirty point two	one hundred and sixty
D155-30×2	one hundred and fifty-five	forty-three	sixty	one thousand four hundred and eighty	seventy-five	three point nine	thirty-three point seven seven	fifty-five
D155-30×3			ninety				fifty point six five	seventy-five
D155-30×4			one hundred and twenty				sixty-seven point five four	ninety
D155-30×5			one hundred and fifty				eighty-four point four two	one hundred and ten
D155-30×6			one hundred and eighty				one hundred and one point three	one hundred and thirty-two
D155-30×7			two hundred and ten				one hundred and eighteen point two	one hundred and sixty
D155-30×8			two hundred and forty				one hundred and thirty-five point one	one hundred and eighty
D155-30×9			two hundred and seventy				one hundred and fifty-two	one hundred and eighty
D155-30×10			three hundred				one hundred and sixty-eight point eight	two hundred and twenty-five
D155-67×3	one hundred and fifty-five	forty-three	two hundred and one	two thousand nine hundred and fifty	seventy-four	five	one hundred and fourteen point seven	one hundred and thirty-two
D155-67×4			two hundred and sixty-eight				one hundred and fifty-two point nine	one hundred and eighty-five
D155-67×5			three hundred and thirty-five				one hundred and ninety-one point one	two hundred and twenty
D155-67×6			four hundred and two				two hundred and twenty-nine point three	two hundred and seventy-five
D155-67×7			four hundred and sixty-nine				two hundred and sixty-seven point five	three hundred and fifty
D155-67×8			five hundred and thirty-six				three hundred and five point seven	three hundred and fifty
D155-67×9			six hundred and eight				three hundred and forty-four	four hundred and forty
D280-43×2	two hundred and eighty	seventy-seven point eight	eighty-six	one thousand four hundred and eighty	seventy-seven	four point seven	eighty-five point one seven	one hundred and ten
D280-43×3			one hundred and twenty-nine				one hundred and twenty-seven point seven	one hundred and fifty
D280-43×4			one hundred and seventy-two				one hundred and seventy point three	two hundred and thirty
D280-43×5			two hundred and fifteen				two hundred and twelve point nine	three hundred
D280-43×6			two hundred and fifty-eight				two hundred and fifty-five point five	three hundred
D280-43×7			three hundred and one				two hundred and ninety-eight point one	three hundred and fifty
D280-43×8			three hundred and forty-four				three hundred and four point seven	four hundred and ten
D280-43×9			three hundred and eighty-seven				three hundred and eighty-three point two	four hundred and thirty