Stainless steel multistage pump is a centrifugal pump with multiple impellers installed in series and flow in series, so it is called stainless steel multistage pump. Essentially, the lift of stainless steel multistage pump is determined by the impeller structure type and circumferential velocity. If the speed can't be increased because of other boundary conditions, and if the impeller diameter increases, the specific speed is too small and the efficiency is not high, the lift can be improved by series connection of multiple stages. The flow rate of stainless steel multistage pumps will not change by changing the number of stage chambers, because the power demand and head are proportional to the number of stage chambers.

Stainless steel multistage pumps are suitable for transporting clean water or physicochemical liquids in high-pressure operation systems, such as high-rise building water supply, boiler water supply, fire fighting systems, etc. or for pipeline pressurization. Stainless steel multi-stage pumps are made of integral stainless steel, which are suitable for chemical, food, brewing, pharmaceutical, textile and other industries. Stainless steel 306 or 316L can be customized according to user's requirements.

Pre-start inspection of stainless steel multistage pumps:

Whether the name, type, main performance and quantity of lubricating oil meet the requirements of technical documents for stainless steel multistage pumps;

Whether the lubrication system, sealing system and cooling system of bearings are in good condition, and whether the oil and water routes of bearings are smooth;

The rotor of disc-driven pump rotates from 1 to 2, checking whether the rotor of stainless steel multi-stage pump is frictional or stuck.

In the vicinity of coupling or belt protection device, whether there are any debris that hinder the rotation of stainless steel multi-stage pump;

Whether the base bolt of pump, bearing seat and motor is loose or not;

The valves or accessories of the working system of stainless steel multistage pumps should be in the position of the lowest load when the pumps are running, and the outlet regulating valves should be closed.