4inch BLASP Submersible AC&DC Solar Borehole Deep Well Pump -Water Filled Encapsulated Motor -SS304 Impeller -MPPT Controller -Factory Wholesale -China Supplier -High quality ：

Features
1.Able to be powered by AC or DC power in case of the solar power input shortage.
NSK bearing and stainless-steel rotor for less abrasion and wearing.
2.High-quality mechanical seal for great water leakproofness, wear resistance and long lifespan.
3.Permanent magnet synchronous motor.
4.Equipped with variable frequency solar charge controller, incorporating MPPT technology, low-voltage protection, reverse polarity protection and dry running protection.
5.Stainless steel impeller.
6.Stainless steel submersible pump body and stainless steel or brass outlet.

Advantage of Encapsulated Water Cooling Motor
The pump motor of the encapsulated water pump is sealed in a pressure vessel filled with water. This pressure vessel is only statically sealed, and a wire set provides a rotating magnetic field and drives the rotor. This structure replaces the rotary sealing device used in the traditional centrifugal pump, so the encapsulated pump has the function of no leakage.
1. Strong load capacity, suitable for harsh conditions.
2. Can be used to transfer various liquids.
3. No need to refuel manually, reducing maintenance costs.
4. Strong acid and alkali resistance, long service life.
5. Energy saving and environmental protection.
6. Using graphite bearings, low noise, long life.