The motor is a 1-phase motor of the canned type with a sand shield, liquid-lubricated bearings and pressure-equalizing diaphragm.
Submersible motors for 4" or larger wells
Manufacturer Product Page: https://product-selection.grundfos.com/ca/products/ms/ms-4000/ms4000-92959989?pumpsystemid=2336835465&tab=variant-curves | Manufacturer Web Site: http://www.grundfos.com
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