A small centrifugal pump choose plastic or stainless steel pump _

First, different interface

plastic pump bearing import and export of nozzles at this stage is not qualified for specification, usually by the design authority unit specific request, according to the production situation of the factory itself. For the overall plastic pump shell, usually choose living way of flange and pipe connection, live on both ends of the flange and cover plate connection; Also can choose the method of the flange and the cover plate is made whole and pipeline connection.

second, pump impeller and shaft connection form is not the same as

1) embedded within the impeller metal parts, metal parts connected to the shaft with a key, or impeller and shaft directly with key links, end with impeller impeller nut protection. This structure from metal material pump, because the seal face, system reliability is poorer. After long-term use, shaft susceptible to corrosion medium.

metal parts, (2) embedded within the impeller and the water pump shaft with a threaded connection, between the impeller nut. Axis of this structure can be fully maintained and prevent shaft is medium corrosion. Defect is screw thread processing precision demand is higher, the runtime banned motor reverse it.

third, different balance of axial force of pump

plastic pump impeller with metal parts, most often weak balance hole to balance the axial force. Widely at home and abroad choose back vane axial force balance.

4, pump body lining thickness and fixed different

by pump product standards, lining thickness is usually 5 - 8 mm, if too thin lining layer ( Such as 1. 5~2mm) , it is pressing steps. Local lining defects, could cause the approval of the pump with temperature and fell, the lining layer from the pump body and the rear cover substrate metal loss probability is increased.

the lining layer fixed way can be used in the substrate metal on the layout of the annular dovetail groove, the method of fixation, the lining layer with time was small.

5, pump impeller seal and back blades are different from the operation of the pump body clearance

small centrifugal pump for plastic and stainless steel expansion coefficient of 2 ~ 6 times larger than steel, stainless steel pump running gap is easy to cause occlusion, damaged the pump. Gap is too big and make the efficiency of the pump will be reduced, and lead to pump axial force in the imbalance. Because the radial gap can't adjust, also can consider to choose the axial gap, so don't have to dismantle the pump, you can check and adjust the running clearance, in order to avoid temperature changes caused by the plastic pump shell off or crack, tortoise shell can be given on the pump shell welding wire mesh, prompting the lining plastic pump can do large sizes, reach DN600 imported pipe diameter.

Looking for a producer to fix your water pump problems? Then contact the water pump experts at J&T INDUSTRY CO.,LTD., offering a wide range of products across the global market. Visit J&T INDUSTRY to find our best offer!
J&T INDUSTRY CO.,LTD. builds value for our investors through the strength of our customers’ satisfaction and by consistently producing superior operating results.
J&T INDUSTRY CO.,LTD. has a number of producing line for producing water pump.
We should take a step back to review how JT approach tracking, implementing, and communicating compliance-related changes and attempt to identify areas of improvement in their processes.